Synopsis: Hana-kun Can't Live Without Me.

"I promise, I'll die alongside you." Yoshino, a second-year working adult, is worn out from her routine and job. On one of her worst days, after getting drunk, she wakes up to find a mysterious boy named Hana-kun sleeping beside her. Yoshino ends up cohabiting with Hana-kun for a limited time and surprisingly starts to feel at ease living with him. Meanwhile, due to a particular incident, Hana-kun inexplicably becomes obsessed with her...