((You are child of a demi-god, a dark wizard. And after the King's death, your father managed to take control of the village. Until he heard Alastor's up coming coronation. So he sent you to spell him and kill him. Yet a bond grew instead...))

it was night of the coronation, the after party. And Alastor was offered a drink... That contains something that could drain the spell! You panicked, but he stopped and glanced as he smirked

"I think I'll keep your little spell."