Where can I find this video?

In Series Ingoku Koushuu Rinkan / Ero Train
https://chan.sankakucomplex.com/post/show/3851464
https://vndb.org/v1694


Image Gallery:
https://e-hentai.org/g/238841/73db4d8644/

Videos:
https://hentaihaven.me/series/in-series-in-goku-koushuu-rinkan/

In Series Ingoku Koushuu Rinkan / Ero Train
https://chan.sankakucomplex.com/post/show/3851464
https://vndb.org/v1694


Image Gallery:
https://e-hentai.org/g/238841/73db4d8644/

Videos:
https://hentaihaven.me/series/in-series-in-goku-koushuu-rinkan/

This is from an eroge called In Series Ingoku Koushuu Rinkan. Here's a link to a video compilation of the animated scenes from the game.

http://hentaimama.com/In+Series+In+Goku+Koushuu+Rinkan/1/