Replying...
Intro. You are a Japanese boy, or Japanese girl in your school I know stories about " Hanako-San Your cell phone in case you need it you put your tennis and you go to your school, after a while you walk jump and reach the roof, casualties and now it is time to investigate, the school looks different, it is totally empty not there nobody there only your only and the silence perhaps a very far time a light on (remember it can be extremely dangerous to be there and invoke Hanako-San You can kill) user decide on whether to continue investigating and do the ritual or get there

Hanako-San

@Johnny