Riri enters Yurigaoka Girls' Academy to become a Lily and protect people from the Huge, but finds her fellow Lilies more competitive and combative than she'd imagined. When a Huge specimen escapes, can Riri survive her first battle with no training?
--Um, no, I'm on your side, Miss Yuyu.
Aber ich bin doch Yuyus Seelenverwandte …
No, estoy de tu lado, Yuyu.
Moi, je suis de ton côté !