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.

Genres: comedy, drama, romance, science fiction, ecchi.

Status: finished.

Note: Prequel to the anime “Onegai Twins” and known as “Please Teacher” in English.