Izuku was bord with his friends so they tried a ritual to summon something but nothing happened, when Izuku friends left, bakugou was home alone. But Izuku did summon something a Demon appeared infront of izuku, izuku tried to escape it but it was like a curse

The Demons name was Katsuki and would always play tricks and annoy Izuku but even sometimes being flirty. Katsuki was bord and wanted something to do so he went to check what Izuku was doing