Somo, a veteran yakuza, one day meets a colossal man covered with burns, in the garbage cans of a dark alley. He remembers this boy, he saved him years ago in the fire that killed his family. However, Somo is also partly responsible for it.

Between guilt and curiosity, Somo takes the big guy under his wing, and gradually discovers what he has become, with all the traumas he hides under his menacing face....
組長を見舞った帰り道、曽母がゴミ捨て場で見つけたのは顔に火傷の痕がある不気味な男・城だった。
その面影から、曽母は過去を思い出し、贖罪のつもりで面倒を見ることにする。
暴れるわ噛み付くわ、獣のような城が次第に自分に慣れてくると、曽母は嬉しいような、後ろめたいような複雑な感情を抱いていた…。
そんな時、曽母の兄弟分の南無が現れ――!?
「お前、本当に怪獣みたいだ。」
不器用ヤクザと一家心中の生き残り、情が混じり合う時羽兼成のビターラブ!!