Eishin Kuga, nicknamed "Mad Dog" for his unmistakable bloodlust, rips through his underlings while Yashiro watches patiently, waiting for the old friend to subdue him. Yashiro, a seasoned enforcer, has long admired Kuga"s ruthless efficiency and hopes to harness his power for the clan. Underground doctor Kanji Kageyama finally meets the hot‑headed youth Yashiro intends to recruit into his yakuza organization. Yet, because Kuga detests Yashiro, Kageyama is left with the duty of temporarily housing him in his clandestine clinic. Still, as Kageyama keeps insisting he has no interest in men, Kuga"s shirtless swagger, riotous attitude, and relentless teasing may just alter his stance.
