Kusanagi Kei, a high-school student living with his aunt and uncle, has an encounter with a female alien. This alien is revealed to be a new teacher at his school. Later, he is forced to marry this alien to preserve her secrets. From there, various romantically-inclined problems crop up repeatedly.
Kikuko Inoue
Mizuho Kazami
Soichiro Hoshi
Kei Kusanagi
Ayako Kawasumi
Koishi Herikawa
Mitsuo Iwata
Hyosuke Magumo
Sayaka Ohara
Kaede Misumi
Yumi Takada
Hatsuho Kazami
Satomi Korogi
Maho Kazami
Tomoko Kaneda
Marie
Rei Sakuma
Miruru
Yukari Tamura
Ichigo Morino
Hiroaki Miura
Matagu Shido
Tomokazu Sugita
Masaomi Yamada
