How I became the wailing girl (Tsukasa x fem reader)

Have you heard of La Llorena? The story where a women killed her children? Like La Llorena there was a girl who was once human that she fallen for a ghost, so much that she became a evil spirit by some sort of broken heart. Legends say she walk through the school Campus weeping for Tsukasa saying, "where is my love?" "Where is my love???" and if she see a male student she takes him away! Many say that she kills them brutally and they are found hanging from a tree with a broken neck.. this is her story...