Happy☆Lesson (TV)
Japanese title: HAPPY☆LESSON
Alternative titles: Happy Lesson
Type: TV
Source: Manga
Episodes: 13
Status: Finished Airing
Aired: Apr 1, 2002 to Jun 30, 2002
Broadcast: Unknown
Duration: 23 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Studio Hibari
Producers: KSS
Licensors: ADV Films
Genres: Comedy, Drama, Romance
Themes: Harem

Hitotose Chitose was always alone and untrusting of people but when 5 female teachers appear and started living together with him in his family's house as his mothers, things started to change and pick up, together with Hazuki-nee and Minazuki (his 2 sisters) everyday is a lesson. 

(Source: ANN)