The main character is like a parasite. He goes from a lizard, demon dog, bird, and a demon bear. He can't escape a dungeon because he is a monster, one day this girl gave him an item where he can leave the dungeon.
http://www.mangago.me/read-manga/spirit_migration_01/
thank you, that is what I was looking for.
The main character is like a parasite. He goes from a lizard, demon dog, bird, and a demon bear. He can't escape a dungeon because he is a monster, one day this girl gave him an item where he can leave the dungeon.