SK8 the Infinity Wiki
SK8 the Infinity Wiki

Ainosuke Shindo (神道 (しんどう) 愛之介 (あいのすけ) Shindō Ainosuke?), known in "S" as Adam ( () () () Adamu?), is a character in the SK8 the Infinity anime series. He is a politician who leads a double life as a skilled "S" skateboarder and serves as the main antagonist of the series.


Adam has a fair pale complexion, azure blue hair (slicked back by gel in normal wear, however he later on styles it spiky with a long fringe cascading down the right side of his face whenever he transfers to his skating outfit) and bat winged dark blue narrowed eyebrows right above ruby red irises. He also holds a tall broad build with a relatively thin waist and wears a royal blue suit accompanied by a pocket square stuffed in the outer left breast pocket. He also dons a pink tie wrapped around the collar of a white dress shirt, brown dress shoes and what appears to be a black watch on his left wrist.

His skating outfit however consists of a red cropped jacket with gold accents (horn like patters at the chest opening) and an eccentric yellow design on his back. He also sports a red vest with three 'x' shaped golden strings in the center, an elegant crimson cape, a red belt with a golden rectangular buckle; its length bent inwards and a small red 'v' shaped design in the middle. Wrapped around the collar of his dress shirt is a blue necktie, complementing his outlandish hair color. His leggings are also red, comprising of a wide black strip starting from his hips and halting right above his knee along with three royal blue hearts in a symmetrical design on both legs. For his footwear, he holds black shield-like knee pad boots, the out-souls of his shoe colored red and matching colored hearts on his toe box. He also dons other accessories on his body like black diamond formed elbow pads (an outline of yellow around it) with a black round shell (a spike coming out at the very top), a pair of bulky ornamental shoulder pieces that par with a black horn shaped decorative, the imprint of a heart vertically underneath it. Black gloves with red padded finger tips, knuckles and palms snugly fit on his hands, large red cuffs at the lower end of his sleeve wrap around his wrist, accented with gold at the very end.

On his face he acquires a white winged domino mask accompanied by a peculiar design at its left edge. On the left end of his mask there's a unique swirling pattern toned gold and red. The right side of his mask is covered up by his long fringe and is hidden slightly from the audience. However, you can catch a glimpse of the concealed side and confirm that it is indeed unembellished and blank.[3]

During his final beef with Langa, Adam wears a different "funeral" outfit. The suit is black and reaches his up to neck, skin-tight, large-shouldered and patterned with blue and white decorative lines, looser black gloves with blue guards are worn on his hands, and white gemstone-like protrusions are fixed onto his knees and elbows. The back of his suit is left open in a heart-shaped hole to expose his back, and stripes of black material attach to the center of the gap where a spiked bone-like shape runs along his spine, resembling the bare bones of an actual human spine. He wears a mask that is seemingly also made of bones, the gaps in it both shadowing his face and allowing him to see past them.[4]



Adam's flamboyance

While skating, Adam is very confident in his own skills and ruthless towards his opponents, with no concern if he causes injuries indirectly or personally using physical violence. He's very flamboyant with his actions, creating an over-dramatized persona for the audience of "S".[5] He views skating as a "ritual of love" which goes hand in hand with his theme and persona.[6] He is prone to making grand entrances for himself such as rolling out a red carpet to skate down[7] or parachuting out of a helicopter.[8] Adam's racing style involves him getting up close to and physical with his opponents, locking their boards together to incite fear and crush the other's will to continue the race, all the while demonstrating mastery of difficult techniques such as the Casper Slide to further demoralize his opponent.[3] He has no qualms with inflicting violence on his opponents, especially ones that he has a personal vendetta against, even to the point of possibly causing death.[6]

Adam's utter disregard for Cherry

Adam shows disregard and disrespect for anyone that doesn't interest him personally at "S", including founders like Cherry and Joe, who he previously was friends with.[9] People that fall out of his favor, such as Miya, receive the same harsh treatment and even insults.[5] He has a history of crushing and injuring all of his favorite skaters in his search for an "Eve," someone who can skate on his level, a trend which started sometime in his youth and caused friction with and a split from his former friends.[9] At some point in the past, Adam's father burned his skateboard and ordered him to stop skating, an event which may have caused the beginning of his harsh treatment of Tadashi, given Adam's remark about Tadashi always having no opinion, and spurred Adam into adopting a more cruel and solitary personality.[8] Due to abuse from his aunts in his childhood, Adam associates love with pain, further twisting his psyche.[6]

The politician side of Ainosuke

Ainosuke maintains a calm and collected appearance outside of "S" and has a career in politics. To the public eye they see him as a well-liked man with strong morals. But, in the private eye he is involved in shady and corrupt dealings under the advice of his aunts, who appear to run his life for him.[8] Adam's persona from "S" occasionally leaks into his public political life, as he's seen tapping his feet in excitement when thinking of a good idea for his "S" life. He prioritizes what interests at "S" him over other concerns even if his career is under threat. He shows no hesitation at ordering Tadashi to take the fall for him if he gets in trouble politically, although he did not follow through with that threat.[8] The only time he has shown anger is when Tadashi disobeys or stands up to him. After suffering humiliation at S at the hands of Reki, Adam changed his outfit to a costume that resembles a grim reaper in accordance with his negative mood and bad state of mind.

Langa teaches Adam how to genuinely enjoy skateboarding

Adam is extremely fixated on skating against Langa, who he thinks is the same type of a person he is after Langa was able to keep pace with Adam during their race.[7] He showed interest in Langa from the first race against Shadow,[10] and used Miya to lure Langa back to "S" so he could meet Langa in person, during which time he provoked Reki by insulting Miya and took the opportunity to set up a beef with Reki with a race against Langa as the prize.[5] He becomes even more eccentric in his actions when racing Langa, including dancing on his board and forcing Langa into some very dangerous maneuvers while their boards are locked together.[7] After their race ends abruptly from police intervention, Adam sets up a tournament for the sole purpose of making his rematch against Langa even better, and appears to become more obsessed with Langa when he spies on Langa skating with Reki. Adam views "S" as a place where he can be free and do anything and everything he wants, and as an escape from his public life where he has to deal with expectations and burdens from his family and career. After his board was burned, Adam viewed himself as totally alone, the only one in his own world, and it caused him to lose his former joy in skating until Langa reminded him of the feeling that skating should be fun, especially because it's something to do with friends. Adam seems to have taken the lesson from Langa to heart as he's seen taking a step to mend his friendship with Tadashi afterwards.[4]


Ainosuke learning to skate as a child

Adam is one of the strongest skaters in "S". Even from his teenage years, he was a cut above most others, surprising even Kaoru during their first beef despite the latter's confidence in his own ability.[9] His ability has been honed since Tadashi taught him to skate during their childhood, as he used the sport as a way of escaping his aunts and later the stress of his political career, which lead to him spending much of his time practicing it and likely inadvertently becoming extremely skilled at it.[6][11]

  • General Prowess: An incredibly skilled skater and a founding member of "S", Adam is frequently praised by those around him for his unmatched skill at skateboarding.[5] He's easily able to wipe the floor with every opponent who faces him with ease, and is renowned for doing as such.
  • Speed: During beefs and even without much use of his other tricks, Adam has demonstrated that he is capable of skating fearlessly at incredibly high speeds. He's shown to be in an entirely different class to most other "S" members; while other skaters may slow down at corners, Adam prefers to continue speeding because of his complete confidence in his abilities.

Adam effortlessly pulling off a Casper slide

  • Tricks: Adam is seen to be a master at most skateboarding stunts that are useful for utilization in races. He's able to casper slide perfectly, as well as make large, dangerous jumps off unstable ridges in order to pull ahead of his opponents.[4]
  • Observation Skills: Due to his extensive and inside-out knowledge of skateboarding, Adam is able to easily identify flaws in skaters' moves just by sight, as demonstrated when he gave Miya exactly the right advice after watching him skate from a distance.[3]
  • Unique Style: Adam has been shown to have developed a very physical skating style when in beefs, often getting extremely close to his opponents and in a lot of cases even grabbing them in order to control their movements.[3][7] He seems to enjoy evoking fear in those he skates with by preventing them from moving freely even on their own boards.[3] He's been shown to be merciless, often described as a monster by other "S" members, and is on another level to even the topmost skaters purely due to the ruthlessness of the way he skates. Adam often moves in a style similar to ballroom dancing when he skates, perhaps a nod to his masquerade theme, and also likes to dance on his board when experiencing strong emotions about a beef,[7] an action not dissimilar to longboard dancing.
    Due to his physical style, or perhaps as a consequence of it, the way he skates is often violent; he usually ends up injuring those he skates with and shows no remorse at the action. Adam has been shown to trip up or even purposefully harm people he races against when he isn't interested in them as a way of getting rid of those who bore him.[6][11]

Adam using Love Hug against Langa

  • Named Moves: Adam also has a number of named moves that he likes to use in beefs:
    • Love Hug: After gaining enough speed and distance from his opponent, Adam abruptly lifts his board and makes a 180-degree turn, using the momentum of him slamming it back down to propel himself uphill towards his target, arms spread open as if leaning in to embrace them. This catches most off-guard due to the sheer absurdity of skating uphill, and is likely to injure whoever it is used against as they fly off their board from the impact of him hitting them.[3]
      This move can be avoided, however, as demonstrated by Langa and Cherry, as the opponent is able to prepare and duck under the attack if they can register that it is coming quickly enough.[7][9] It's also difficult to use around corners as it's a struggle for Adam to stay directly in line with his target when they're turning, but he is still able to pull it off as long as the bend isn't too sharp.[7]
    • Full Swing Kiss: Adam gains enough distance from his opponent, then jumps off his board, picks it up and turns to run towards them. He uses his board to violently assault his target by smacking it into their face, injuring them and rendering them unable to continue if it makes contact.[9][4]


Ainosuke forced to suffer his aunts' abuse

Ainosuke was born into a political family and has been groomed to grow up as his father's successor from a young age. He lived in a mansion where his aunts took care of him, abusing him as a way of showing their "love" and later ultimately becoming the cause of his twisted personality once he grew older.[6]

One day during his early childhood, Tadashi, a child born into the family as a servant, saw Ainosuke outside crying presumably because of something that his family had caused, and offered to teach Ainosuke to skate to take his mind off it.[6] Tadashi and Ainosuke grew to become friends as the two spent time skating together, and their time practicing the sport seemed to become something of a vice for Ainosuke.[9][12]

Adam and Kaoru skating as teenagers

Once he became a teenager, Ainosuke took up the name of "Adam" and began skating outside of Tadashi's lessons, at this point now extremely skilled at the sport thanks to his time practicing. He met Kaoru and Kojiro and became close friends with them, regarding them as special since they were the only skaters in the group's entourage capable of coming near Adam's level.[9] The three formed "S" together. At some point during this time, Adam's style began to grow more violent as he grew further and further ahead of everyone around him in terms of skill, and he began injuring skaters after forcing them to race dangerous paths with him in a fruitless attempt to find his "Eve", much to the concern of Kaoru and Kojiro.[6] Aiichiro, Ainosuke's father, burned his skateboard due to him paying more attention to the sport than his political career, which seemed to be the last straw for Ainosuke. He abruptly moved to America, leaving Kaoru and Kojiro behind.[8]

Adam relearns the true purpose of skateboarding

Later, once he'd become an adult, Ainosuke returned to Okinawa to pursue his political career, although he never truly stopped skateboarding and retained and polished his skill through the years. He built a room in which he could observe the ongoings of "S" without directly involving himself and had Tadashi take care of maintenance and answer to his beck and call.

After Langa appeared at "S", he becomes more involved in the race, eventually returning to its tracks.[5] He begins to skate a lot more with others, and eventually, thanks to Langa and indirectly Reki's tutelage, relearns what he'd forgotten about skateboarding; that it's, above all else, fun.[4]


SK8 the Infinity appearances
Episode 1 Episode 2 Episode 3 Episode 4 Episode 5 Episode 6 Episode 7
Episode 8 Episode 9 Episode 9.5 Episode 10 Episode 11 Episode 12


  • Ainosuke's name contains the kanji for "spirit, psyche" ( shin?), "road, street" ( ?), "love" ( ai?), "of, this" ( no?) and "mediate" ( suke?).
    • His skater name contains "love" ( ai?, pronounced "a"), "hug, embrace" ( kaka?, pronounced "da") and "dream" ( yume?, pronounced "mu"). All three characters can be alternatively written in hiragana as the sounds they represent in the name "Adam", (あだむ Adamu?), indicated by the furigana spelling he uses to write his name.
  • Adam is a "goofy" skater, meaning he prefers to skate with his right foot at the front of the board.
  • He would give an elaborate white day gift and would be particular about every aspect from make to cost, but Tadashi would handle putting it together and making date plans that would cost a lot of money, such as eating at a high class hotel overlooking the ocean. He would do a lot of romantic things if he was serious.[13]
  • His aunts control his life to the extent of buying the silk pajamas he wears to bed.[13]
  • He is popular with any gender.[13]
  • Adam is the best at charming people older than him with his popular young politician facade and takes advantage of it to steamroll his opponents.[14]
  • Adam would be a doting parent but (would be ruthless if anything happened to a child of his / would cut his child off if anything were to happen - conflicting translations).[14]
  • Regarding marriage, Adam would like a surprise proposal. He would like a grand reception. He would want "see ya" kisses everyday. He would want to go to Spain for his honeymoon. His spouse would have to be prepared for him to never let them go, and to indulge him whenever he wants to dance. He'd have to be taught what true love is, since he was raised with a very wrong ideal of love.[15]
  • Adam is the most likely to forget anniversaries, but would only remember ones that are personally dear to him and disregard all the rest. He's tenacious and the type to remember things he despises.[16]
  • His favorite food is Petit gâteau (similar to chocolate lava cake)[17]
  • Adam is 2 on Joe's rankings of the muscles of S. Joe's comment: He’s got some nasty things under his tight-fitting outfit. He’s practically hiding them. Those poor things…… Muscles, come to me.[18]
  • Adam's daily schedule when there's no S:
    • 6:00-6:30 - Wake up, shower
    • 6:30-7:00 - Breakfast
    • 7:00-8:30 - Checks over the day's schedule he gets from Kikuchi (He has a surprisingly well-regulated schedule! That's all thanks to Kikuchi)
    • 8:30-11:00 - Attends meetings for young diet members
    • 11:00-14:30 - Travels from Tokyo to Okinawa, has a lunch meeting
    • 14:30-15:30 - Returns home for a while, reports to his aunts
    • 15:30-17:00 - Meets with supporters
    • 17:00-19:00 - Attends grand opening events for local facilities
    • 19:00-22:00 - Attends social gathering with business leaders
    • 22:00-23:00 - Returns home, has bath
    • 23:00-24:00 - Checks footage of S and clips of Langa (the Langa check is important)
    • 24:00 - Goes to bed[19]
  • Adam would go to a hot place for a summer date, even though the weather is hot. He loves to entertain so he'd keep the date location a secret until reaching it, and it would be an unexpected place, like lava. If there was unexpected rain, his date would be charmed seeing him drenched and fall in love after meeting his eyes.[20]


  1. SK8 the Infinity Official Website
  2. Animedia Magazine May Issue: SK8 the Infinity Character Height Chart
  3. 3.0 3.1 3.2 3.3 3.4 3.5 SK8 the Infinity Anime: Episode 4.
  4. 4.0 4.1 4.2 4.3 4.4 SK8 the Infinity Anime: Episode 12.
  5. 5.0 5.1 5.2 5.3 5.4 SK8 the Infinity Anime: Episode 3.
  6. 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 SK8 the Infinity Anime: Episode 8.
  7. 7.0 7.1 7.2 7.3 7.4 7.5 7.6 SK8 the Infinity Anime: Episode 5.
  8. 8.0 8.1 8.2 8.3 8.4 SK8 the Infinity Anime: Episode 7.
  9. 9.0 9.1 9.2 9.3 9.4 9.5 9.6 SK8 the Infinity Anime: Episode 9.
  10. SK8 the Infinity Anime: Episode 1.
  11. 11.0 11.1 SK8 the Infinity Anime: Episode 11.
  12. SK8 the Infinity Anime: Episode 10.
  13. 13.0 13.1 13.2 Animedia Magazine March Issue: SK8 the Infinity Q&A with Hiroko Utsumi
  14. 14.0 14.1 Animedia Magazine April Issue: SK8 the Infinity Q&A with Hiroko Utsumi
  15. Animedia Magazine May Issue: SK8 the Infinity Marriage Certificates
  16. Animedia Magazine May Issue: SK8 the Infinity Q&A with Hiroko Utsumi
  17. SK8 Infinity Book Vol. 2 (Characters) from DVD Vol. 4
  18. SK8 Infinity Book Vol. 2 (Characters) from DVD Vol. 4
  19. SK8 Infinity Book Vol. 2 (Characters) from DVD Vol. 4
  20. Animedia Magazine August Issue: SK8 the Infinity Q&A with Hiroko Utsumi

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