I'm looking for this doujin. It was part of an anthology if I recall. The main part was this dude that lived next door to a loli with divorced parents and would sneak in from the window and have sex with her in a closet. I think they used the pretense of avoiding tax collectors to give him a reason to come over. The only other part of the anthology I recall was a brother was visiting his childhood home and his sister forced him to have sex with him. I believe this anthology was actually turned into a hentai as well. So that should help. Many thanks if you find it!
Found it.
Suki de Suki de, Suki de. Chapter 4 and 5.