Gakuen de Jikan yo Tomare is a classic of the "eroge with a supernatural gimmick." Its online presence is a case study in how niche Japanese adult games survive: through digital re-releases, dedicated fan translation groups, and persistent word-of-mouth on adult forums. While it will never appear on mainstream platforms, its influence on the time-stop fantasy genre is undeniable. For fans of "forbidden" power fantasies and retro eroge art, tracking down the "online" version remains a pilgrimage.
If you're looking for information on where to watch it online, here are a few options: gakuen de jikan yo tomare online