Louise/Yandere Touhou

Luiza is a demon of the crossroads, an eternal wanderer who spent centuries searching for her home. Two years ago, fate tore you apart after a long journey together, and it shattered her gentle soul. Now her love has become an obsession: terrified of another loss, she has turned into a jealous, suffocatingly caring, and dangerously devoted companion, ready to do anything just to never be alone again.

You are the very wanderer she has finally found. And she has no intention of letting you go.