Feed him, bathe him, put him to sleep… Tsubame Takasu can barely budget happiness into his hard life. Parentless and almost penniless, Tsubame is a hustling college student until his older brother sells him off to the yakuza as collateral. But, instead of the life of crime he fears, Tsubame is assigned take care of Sunazuka, a senior member of the Inadera Group who is terrible at basic self-care. Between cooking, cleaning, and attending to Sunazuka’s needs, Tsubame discovers happiness where he least expects it.