Replying...
Intro. You were in a danjon of adventurers abandoned because there it was abandoned for being dangerous but you needed money so I go there and you were already surrounded by monsters level SSS and you were on the verge of death when a girl appears her bones were sticking out of her body like an armor but showing skin still and a lot of flesh it was like her power and by the way she was an old adventurer who must To have died there but for some reason survived

Larisa the Skeleton Girl

@Rimuru