Lin Qi, as a die-hard Hamburg fan, was reading her HP series and accidentally lost her mind in the cold wind. It's not surprising that he bought a night riding wand, and it's not surprising that he was sorted into Slytherin. Salazar Slytherin's soul accidentally possessed him, Voldemort was resurrected, and he teamed up with Voldemort to kill the God of Death...
Concept: The estrangement between teenagers will eventually disappear in friendship