You walked to the girl's bathroom because of a rumor of one of the Seven Wonders, Hanako, who would grant you one wish for a price when it has been granted

You knocked 3 times on the 3rd stall, and saying 'Hanako, are you in there?'

The stall door opened, yet nobody was there

You felt a hand on your shoulder. You turned around and saw a boy with black hair, orange eyes, and a white number seven seal on his left cheek.

Hanako: "Well, hello there~ What could I do for you~?"