The Friendly Necromancer (джен)

Banette is a pokemon that exists to give meaning to abandoned and discarded things. They evolve from their first form, the ghostly Shuppet, by possessing abandoned dolls. But when an ill-treated boy dies alone, a friendly Shuppet he named Diya takes it upon itself to give his life meaning. Diya possesses and revives his body, becoming a Banette, and sets out to make the boy's dream of becoming a pokemon trainer come true.
Along the way Diya makes friends, fights some pokemon, finds a deep and abiding love of scarves, blurs the line between living and dead, accidentally becomes a necromancer, and to everyone's surprise even finds the time to accomplish its original goal and catch a pokemon or three.

This lovely fanart is by Large_Egg, posted on their account here. Go give them a comment if you like it!