TV-Series
Description
Kentarou Yamamoto started as a yakuza underling in the Inugane gang, abandoned by his parents in childhood and raised by his grandfather. This upbringing forged intense loyalty to his yakuza brothers, Ryo Tachibana and Kazuhiko Sugihara. After a critical mission failure enraged boss Kimanjiro Inugane, he faced a brutal ultimatum: ritual suicide or gender reassignment surgery in Thailand to join a female idol group. Choosing survival, he endured the procedure and transformation, emerging as "Airi Yamamoto."

Post-transition, Airi led the idol group "Gokudols," echoing his former role as the trio’s "aniki." Despite adopting a feminine appearance, he retained yakuza traits—gruff speech, masculine mannerisms, and a volatile temper—frequently clashing with idol expectations. This duality sparked recurring internal conflict, though forced participation in idol activities slowly fostered acceptance of his new identity.

A pivotal personal arc involved his past girlfriend, whom he left six years earlier to shield her from his criminal life. As Airi, he discovered she now had a five-year-old daughter who idolized him. Initially suspecting the child might be his, he wrestled with revealing his identity. A mid-credits scene in the live-action film later revealed she married another man immediately after their separation, confirming the child wasn’t his—a revelation that caused him to faint.

His yakuza instincts frequently erupted during idol conflicts. When producer Seiji Koizumi kidnapped their loved ones—including Airi’s ex-girlfriend and her daughter—he spearheaded the Gokudols’ violent dismantling of Koizumi’s yakuza henchmen, wielding a katana with lethal precision. This fusion of idol performance and brutal combat highlighted his unresolved identity struggle. Occasionally, he leveraged his idol status to protect fans from yakuza threats, displaying unexpected protectiveness.

Across media, his development showed reluctant adaptation. He consistently resisted feminine norms, rejecting "cute" behavior, yet gradually embraced aspects of his idol role—particularly during performances where his leadership solidified group cohesion. His bond with the Gokudols remained anchored in brotherhood, prioritizing their safety against Inugane’s tyranny and external dangers.