Happy Lesson

A single-issue comic from 2004 published by A.D. Vision, Happy Lesson adapts the premise of the anime and OVA series of the same name, centering on a high school student who finds himself living under one roof with five eccentric, motherly teachers. The manga was released as a tie-in to the franchise, offering a concise, self-contained take on the harem comedy dynamic. While brief, it stands as a niche artifact of early 2000s multimedia cross-promotion.