Kaede Yoshino, a second-year working adult who is exhausted from work every day.
On the worst day of her life, a drunken Kaede picks up a black, fluffy, warm man on a beautiful moonlit night... ...a man like a black cat?! Kaede begins to experience the warmth of living with someone as she ends up living with Hana-kun, who has no home to return to, for a limited time.
Then, due to an incident, he gets to know the 'real' Hana, something he never imagined...?!