Onegai☆Teacher: Himitsu na Futari
English title: Please Teacher!: Secret Couple
Japanese title: おねがい☆ティーチャー ヒミツなふたり
Alternative titles: Onegai Sensei OVA
Type: OVA
Source: Original
Episodes: 1
Status: Finished Airing
Aired: Oct 25, 2002
Duration: 21 min
Rating: PG-13 - Teens 13 or older
Studios: Daume
Producers: Bandai Visual, WOWOW, Lantis
Licensors: Nozomi Entertainment, Bandai Entertainment
Genres: Comedy, Romance, Sci-Fi, Ecchi

Kei and Mizuho are having some marital difficulties, and Mizuho's family decides it's high time for a visit. 

(Source: ANN)