Kaoru Sakurayashiki, alias Cherry Blossom, is a 26-year-old man standing 182 cm tall with a slim build, weighing 64 kg, pale skin, long sakura-pink hair often tied back, and golden eyes. He wears traditional Japanese attire: a navy-blue kimono with a gray and yellow obi, tabi socks, and zōri sandals, frequently accessorized with silver-framed glasses and a fan. For underground "S" skateboarding competitions, he adopts a ninja-inspired look: a sleeveless white hakamashita kimono, purple-accented hakama pants, a black balaclava mask, and reinforced tabi socks featuring purple soles. His younger self had shorter hair, multiple ear piercings, and a lip ring. Professionally, Kaoru is a renowned artificial intelligence calligrapher who integrates technology into his art and daily life. He created an AI system, Carla, serving as his personal assistant across devices, including his skateboard. Carla provides precise maneuver calculations, records performance data, and switches the skateboard to longboard mode ("Type: Long") for enhanced speed. This technological advantage underpins his logical, analytical skating style, making him a top competitor in "S," the underground circuit he co-founded as a teenager with childhood friends Kojiro Nanjo (Joe) and Ainosuke Shindo (Adam). Kaoru presents a dual nature: publicly calm and polite, yet privately prickly and sarcastic, especially around Kojiro. Their kindergarten-originated friendship involves frequent bickering, though they mutually rely on each other for emotional support and collaborate mentoring younger skaters Reki Kyan and Langa Hasegawa. He fiercely separates his civilian identity from Cherry Blossom, reacting aggressively to context breaches of his name or alias. Despite an aloof exterior, he demonstrates loyalty, helping Reki and Langa analyze Adam's dangerous techniques. He harbors deep-seated pistanthrophobia (fear of abandonment) and separation anxiety, partly stemming from his mother's death due to cancer, which previously triggered depressive episodes and suicidal ideation. Carla's creation aimed to alleviate his loneliness. Kaoru's background includes a rebellious teenage phase contrasting his current refinement. His friendship with Kojiro and Adam fractured when Adam began injuring opponents in "S" races and abruptly left for America, leaving Kaoru feeling betrayed. This fuels his persistent desire to challenge Adam, seeking to prove his worth and resolve their conflict. As an adult, he balances his calligraphy career with nightly "S" skateboarding, where he has a fan following. He experiences neurotic tendencies and insomnia, using Carla to manage his sleep schedule and play lullabies. Personal details include a preference for Italian cuisine, especially carbonara, and an aversion to spicy foods. He harbors romantic inclinations toward a surprise proposal and a space-themed honeymoon, dislikes grand receptions and daily farewell kisses, and acknowledges he would be inept at childcare. His hobbies include singing and doodling, with favorite colors pink and purple. An upcoming OVA will explore his high school dynamics with Kojiro and Adam.