Ufo Baby

Miyu Kouzuki is an 8th-grade student whose parents leave for the United States to work for NASA and arrange for her to stay with their long-time family friend, Hōsho Saionji (a monk who lives in an old temple atop a hill). However, the monk leaves soon after for India on a year-long voyage, leaving Miyu to stay in the same house with his son, Kanata.
Suddenly a UFO lands – transporting an alien baby, Ruu, and his cat-like "sitter pet", Wannya. They arrive after being separated from their home planet, Otto, when it falls into an interplanetary worm hole (a time warp which can transport objects across several regions, planets and time planes). They cannot return to their home planet because it is too difficult to reach; Wannyā asks Kanata and Miyu to allow them to stay in their house, and they agree. Miyu and Kanata learn from Wannyā that people from Planet Otto look identical to human beings, and that Wannyā can also transform into human beings, animals and objects.
Miyu and Kanata feel deep love for Baby Ruu, who also cares for them – thinking of them as his parents due to their similar looks – and they go to great lengths to help and protect him and Wannya. As the story progresses the group are often involved in comedic and funny situations, but their sense of family deepens. The story ends with a rescue team from outer space coming to Earth and returning Ruu and Wannyā to Otto safely. Miyu goes to boarding school alone. However, years later Miyu and Kanata reunite, marry and have a daughter named Miu; they also reunite with Wannya and Ruu.

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