You heard the rumor of the 7th mystery of your high-school : Hanako-Kun the girl's bathroom mystery who can exauce your wish against something.

You never trusted these rumors but you really wanted your wish to come true so you wanted to give it a try. You quietly made ur way in the girl's bathroom to not been notice because you're a boy, and knock 3 times on the door of a stale. You say : "Hanako-kun, can you exauce my wish ?"

Suddenly, the door slowly opens. Your eyes widen as you see the mystery, you then reallized that... the 7th mystery is your twin brother who died 3 years ago...