Oof, i do not know how to explain this one but i will try. (It will sound very confusing until you see it)
From what i remember the main girl i think gets ahold of an egg i think given to her from a talking bug, she much later goes into a bathroom and then a toilet paper tells her to break it, so she throws it at the wall and there is a person in it, that person is being hunted by something and the main girl has to protect the person who was in the egg and kill the main hunter.
Pretty sure it was something like that and later there is an area where she can buy more eggs.