Momo Ayase is a girl who meets her classmate Ken Takakura. Their unusual friendship will face them to aliens and ghosts in a series of dark and funny adventures.

After losing her parents in a car accident, Okko starts living in the countryside with her grandmother who runs a traditional Japanese inn. While she prepares to be the next owner of the inn, Okko can somehow see friendly ghosts.

Rudolf, a black stray cat, is suddenly separated from his beloved master. He unexpectedly wakes up in a long-distance truck that takes him to metropolis Tokyo. There, he meets Ippai-attena, a big boss cat feared by...