Time Machine

Overview

Time Machine, released in 1998, is a collection of several previously released short 1 shot mangas by Suehirogari. The theme seems to be "Memorable events that change lives", but other than that, there is no connection between the stories. Scanlated so far from this volume: • Night Swimming-In the middle of his first year at high school, Usuki Hidemi is talked by a bouncy classmate into joining the student council as a secretary. But the student council has a sexy secret... they've been having secret orgies late Saturday nights when their teacher leaves! ...And the beautiful president has a sexy little secret of her own, one that is old hat to the student council, but that Usuki is having to discover "first hand"...

Source: AniList