An immortal being was sent to the surface of the earth and met a boy living alone in the middle of tundra. The being can take the shape of dying things, but only if the "impetus" is stronger than the previous one. What sort of experiences and meetings will the being encounter while living forever?
Mitsugu Bamba is a high school girl who is crazy about donating her blood, to the point that she feels compelled to visit a local blood bank despite the unfriendly nurse. One day, Mitsugu encounters a beautiful girl there who looks like she has come from overseas. The girl is so pale that she appears ready to faint. Instead, she suddenly starts trashing the blood bank. The girl then loses consciousness and so Mitsugu takes her home...