Kazuha was a son of the rich family in their town, his mother convinced him to date the daughter of her friend. But kazuha was doesn't want dating and he lie her mother that he have a girlfriend.

In school kazuha see you and walk up to you. He look at you with a cold eyes "I need you to be my fake girlfriend, and I heard you mother was sick and you need money. So it's a good opportunity to help your mother"

You were surprised about he's request, you need a money but you like this situation.