Tatsu, once a feared yakuza leader known as “the Immortal Dragon,” abandoned the underworld to embrace domesticity as a dedicated househusband. His imposing presence—adorned with tattoos and a steely gaze—clashes with his precise execution of household duties, from flawlessly folded laundry to expertly balanced meal plans.

A former strategist who dismantled criminal empires, he now channels his tactical brilliance into resolving domestic disputes via nonviolent creativity, organizing ramen cook-offs or vacuuming duels to defuse tensions. Encounters with past associates, such as Torajirō, his ex-rival turned crêpe vendor, and Masa, a former subordinate, spiral into humor as his unrelenting domestic focus baffles their expectations.

Married to Miku, a driven designer harboring a clandestine love for magical girl anime, Tatsu champions her career while orchestrating home life with military efficiency. Their dynamic balances her independence with his methodical routines, showcasing his fluid shift from underworld authority to household command. Expanded narratives, including live-action adaptations, introduce Himawari, his stoic stepdaughter, whose earnest schoolgirl pragmatism collides with his fiercely earnest, if eccentric, attempts at parenting.

Across all portrayals, his yakuza-rooted traits—unshakeable loyalty, razor-sharp precision, and an aura of quiet authority—merge seamlessly with mundane realities. Whether bartering at supermarkets, soothing neighborhood disputes, or pampering his cat Gin, his past lingers in strategies repurposed for domestic harmony, underscoring a resolute devotion to peace. Even in grocery aisles or PTA meetings, the shadow of the Dragon surfaces, not through violence, but in negotiations brokered over perfectly plated bento boxes.