TV-Series
Description
Atsushi Sendō, universally known as Akkun, led the Mizo Mid Five group alongside friends Takemichi Hanagaki, Takuya Yamamoto, Makoto Suzuki, and Kazushi Yamagishi. His early demeanor revealed a confident, protective leader who shielded weaker members, especially Takuya, from threats. This fierce protectiveness escalated dramatically when he attacked and stabbed bully Masataka Kiyomizu to save his friends, resulting in juvenile detention and a temporary estrangement from Takemichi. Akkun nurtured a deep ambition to become a hairdresser, diligently training at his cousin's Harajuku salon. In one timeline, he invited Takemichi as his first customer upon achieving this dream.

Physically, Akkun sports a distinctive plum pompadour hairstyle decorated with hair clips and light heather eyes. He initially wore a standard school uniform before adopting Tokyo Manji Gang attire. Alternate futures depict him with short hair, visible arm tattoos, a cross necklace, facial marks, and a left ear piercing.

His personality blends intense loyalty, bravery, and natural leadership with underlying insecurities and a tendency towards desperation under pressure, sometimes leading him to wield weapons like knives in fights. Methodical and duty-bound ISTJ traits guide his actions, while Enneagram Type 8 drives his confrontational stance in protecting loved ones. Despite his tough exterior, a creative and gentle side connects to his hairdressing passion.

In combat, Akkun operates at a street tier level with athletic human speed and durability. He defeated opponents like Shion Madarame and played significant roles in conflicts such as the Tenjiku clash. His fighting style relies on physical strikes and occasional knife use, though emotional volatility can compromise his effectiveness.

Relationships shape his journey: he shares a profound, evolving bond with Takemichi, marked by initial admiration but fractured after the Kiyomizu incident. In one future, despair over betraying Takemichi under Kisaki Tetta's coercion drove him to suicide. He maintained ties with the Mizo Mid group and later Tokyo Manji Gang members, serving as vice-captain under Kazutora Hanemiya.

His story unfolds across timelines:
* **Original timeline:** Following juvenile detention, he joined the Tokyo Manji Gang as a low-level member, becoming entangled in crime under Kisaki's influence.
* **Tragic futures:** Overwhelmed by guilt, he confessed to pushing Takemichi onto train tracks before jumping off a building in one version. In another, Kisaki forced him to kill Hinata Tachibana via car crash by threatening his family, leading to his own death.
* **Redemption arc:** After the Tenjiku battle, his declaration about Takemichi's resilience inspired the gang. Following Takemichi's final time leap, he achieved his hairdressing dream and joined the "Second Tokyo Revengers" against the Kanto Manji Gang. He became fourth division vice-captain and defeated Shion Madarame in the climactic battle.

Trivia includes his orange image color, admiration for Elvis Presley, dislike of punch perm hairstyles, and a 31st-place ranking in a character popularity poll. His name combines "kindness/honesty" (Atsushi) with "thousand hall" (Sendō).