Keifuku-san

Tanaka Koharu joins a school club whose main activity is to discuss the activities of school clubs, often taking common anime/manga tropes to the extremes.

A story about three sisters struggling to survive in a desolate world surrounded by decaying buildings and red fog. The story revolves around Rin, a girl with an updo. There's also Ritsu, the big sister who has cat ears and is always calm, and Rina, the innocent, cheerful one dressed in a maid's costume. Just what is it that these sisters are after in this mysterious world?

Japari Park is an enormous integrated zoo built somewhere in this world. A mysterious substance found there, called "Sand Star," causes the animals to turn into humanoid beings called "Animal Girls"! These new creatures spend every day peacefully with the zoo's visitors... but after some time, a lost child turns up in the park. The child's attempt to find the way home turns into a great adventure with the Animal Girls!