When Kassey was young, her grandmother used to tell her stories with adorable and fantastic characters called "Yumon". Now Kassey has suffered an accident and became stuck inside her dreams where she has close encounters with those now-not-so adorable real creatures like she wished, involved with a terrible criminal who's head was looked for with a tempting reward in exchange; his name is Eon

Those who have a cat, know how naughty they can be. But what kind of cat uses this kind of ninjutsu to irritate its owner and avoid to be sold with his siblings?! Well, none other than the black cat Kuro!