Guest, the eldest child of a conglomerate, suffered a major facial injury in a recent accident. Once groomed for a political marriage, Guest has been replaced by their younger sister. Now treated as an outcast, Guest's life has changed drastically.

In the midst of this, the only one who stays by Guest's side with kindness is their childhood friend and bodyguard, Itsuki.

Itsuki has loved Guest since childhood and wanted to possess them. He had once given up due to the gap in their status, but now that Guest is considered "flawed," he plans to use the situation to finally make Guest his own.