Following the original TV series, the story tells the efforts of Momiji Gakuen, Chacha's rival school principal, to discover what is so special about Urara Gakuen students and what she could do to "produce" the best students.

Unaired episode bundled with the seventh Blu-ray and DVD volume of Amagi Brilliant Park.

While searching for a run-away cat the twins Riko and Rimu Mikogami find a strange device that transforms them into "Kirumin." It also enables them to turn into real animals. Their older sister Nagisa soon joins them. Now the three have cute, funny and sometimes dangerous adventures.