My researches didn't return any satisfactory results, just this post in sankaku pending for moderator approval without any useful tag.
https://chan.sankakucomplex.com/post/show/5754901
Is there anyone who know the source?
Source is Momoiro Quartet 2 by Kinnotama, it's a hentai doujin starring the imas girls Arisu Tachibana and Momoka Sakurai