The 2nd is pretty clear what it’s about

Well, I guess no, if that's a joke then it's not funny. In the anime, one girl woke up with a big belly, but as it turned out, it was a big egg that clung to her stomach at night. Soon, it started jumping from girl to girl. There was a magical pig-like animal in the egg itself. Clinging to a person, it penetrated into consciousness and helped people accept their problems (cleared their thoughts of unnecessary suffering).