MC is reincarnated I think. Its a world where you raise pets He can see how to evolve or train Pets He has dual identities and his hidden one is called "Curator" He meets people in a magical room with doors where random guests appears and he answers their questions about pets in exchange pet/beast parts The more pet materials he touches, the more abilities he gets from his system(?) His own pet is a is wolf that he evolves into a 3 headed wolf You used to be able to cultivate in the past but some immortal eating beast ate all the immortals I think? I didn't get far beyond that