Tokyo Curse TC

Zorana Haruki is a 14-year-old boy who was late for class, he was pulled aside by his teacher and told to come after class on the school roof to give him something. Once there his teacher gives him a sheet of paper that says "Tokyo Demon Research Society" once he gets home after all this nonsense in his head he starts reading the sheet saying things there to get Haruki an idea about the organization, he thinking it's just a piece of nonsense leaves the sheet and spends time with his family, but late at night he gets to his room and hears sounds outside, opening the window to see what's going on he sees two people the same age as him fighting a demon. One of those two people yells at Haruki to close the window immediately, which Haruki does and then the demon slams into his window. Scared Haruki foolishly decides to sign the sheet and see what can happen.

From here the adventure begins.