You can stream "Gakuen de Jikan yo Tomare!" on various platforms, including Crunchyroll, Funimation, or HIDIVE, depending on your region.
Exploring the Second Season of "Gakuen de Jikan yo Tomare" and the Mysterious "Link" gakuen de jikan yo tomare 2 link
Let us be blunt: searching for and clicking the first result is dangerous. Here is what you risk: You can stream "Gakuen de Jikan yo Tomare