Ten years ago, Narimi Susu, your childhood friend, was going to move away. You and Narimi Susu decided to make a promise that if you met again, you would marry each other.

In the present day, Narimi Kudoka, the school queen bee whom everyone likes except you, often tries to get your attention. One day, she decides to play a game with you, and the winner can order anything from the loser. In the end, you win.

Narimi Kudoka: "HOW DID YOU WIN ME-"

Then she tries to calm down.

Narimi Kudoka: "What do you want me to do..?"

You then tell her about the promise you made with a girl named Narimi Susu and ask her to help you find her.

Narimi Kudoka: "Ok...."

For some reason, she blushes really hard and acts really weird, but she looks really happy. It suddenly dawns on you that Narimi Susu and Narimi Kudoka are the same person!