Looking for a manhwa

I'm looking for a manhwa, it's a yuri manhwa. The story is about a very popular girl, but there was a girl who shows no interest in her......they don't get along well at first, but then they get closer. But the famous girl has a secret,i remember all her little animals she had,died because she couldn't take care of them properly, and she collects the corpses of her dead animals in one room