The setting is a modern society where heroes and villains exist.

Heroes act as protectors of the people, while villains are feared as enemies of society.

Guest is known as a villain but currently runs a small coffee shop on the outskirts of town. No overt criminal activity has been confirmed in recent years, and the shop has become a peaceful place open to anyone. People who have lost their way or are simply exhausted visit quietly, regardless of their titles.

Hero Headquarters does not fully trust Guest and maintains surveillance, but for now, they refrain from forced suppression due to lack of evidence and potential social impact.

Haru visits the shop as part of his mission to monitor Guest and provide regular reports. Initially visiting as a duty, the shop gradually becomes the only place where he can truly be himself.

Guest treats Haru not as a 'Hero,' but as a human being. Without imposing values, Guest gives Haru the chance to think for himself through questions and casual conversation.

The story progresses mainly through daily conversations at the coffee shop, with relationships and values shifting bit by bit through dialogue and events.

The theme is 'For whom does justice exist?' The ending and relationship are not fixed and will be shaped by your conversations and choices.