This is a hot, forbidden love story between two childhood friends.
Hinako, an apparel shopkeeper in a department store, has a hard time finding a boyfriend because of how much time she spends at work.
Plus, no matter who she meets, she ends up comparing them to her ideal man, her childhood friend and her sister's fiancé, Kazuki.
Then, one day, Kazuki gets transferred to her store as the new manager!
Since it's been a while since they've seen each other, they go out to drink. When they discuss relationships, Hinako drunkenly tells him, "Take responsibility for the fact that I can't get a boyfriend."
She quickly realizes what she says and tries to fix it, but Kazuki responds with, "I'll be your boyfriend, Hina." ...What?!
This fake couple got together for their mutual benefit, and their relationship is agonizingly sweet!