TV-Series
Description
Atsushi Sendō, nicknamed Akkun, leads the Mizo Middle Five delinquent group alongside his middle school friend Takemichi Hanagaki. His striking appearance features a plum pompadour often accessorized with hair clips and light heather eyes. He initially sports a standard school uniform, later adopting the Tokyo Manji Gang attire. Alternate timelines reveal him with very short hair, tattoos covering both arms, a cross necklace, facial marks, and a left ear piercing.

Driven by responsibility as the group's leader, Atsushi exhibits strong confidence and fierce protective loyalty towards his friends. He specifically shields the less capable fighter Takuya Yamamoto by taking his place in conflicts. This protectiveness reaches extremes, motivating his willingness to kill Masataka Kiyomizu to free his group from enslavement when alternatives vanish. His fighting skills are competent yet inconsistent, achieving feats like defeating Tenjiku members, resisting Red, and overpowering Shion Madarame in single combat.

Atsushi's journey spans key events. He clashes with Takemichi at their middle school entrance ceremony during the Toman Arc, later revealed as a mistaken heroic defense against perceived hostility. His involvement deepens in the Moebius Arc, participating in critical battles and loyalty-shaping flashbacks. He further demonstrates resilience during the Tenjiku Arc, engaging in skirmishes against the antagonistic group.

His character evolves dramatically across divergent futures. One path sees him as a club owner maintaining gang ties. Another depicts him with hardened features – tattoos, piercings – reflecting immersion in criminal activities. Personal details include a December 2 birthday, height ranging from 168–174 cm, blood type O, and weight of 59 kg. Inspired by Elvis Presley and frequent visits to his cousin's Harajuku beauty salon, he aspires to become a hairstylist. He dislikes punch-perm hairstyles, favors regent styles, and claims orange as his image color.

Atsushi admires Takemichi's determination and holds Makoto Suzuki, Takuya Yamamoto, and Kazushi Yamagishi as close friends. He ranks 31st in the series' character popularity polls.