Eromanga Sensei Light Novel Ending. You can't have an Ayase+Kirino ending though, which is a shame really. Masamune's novel illustrator, pen name 'Ero Manga Sensei', draws extremely perverted drawings, and is very reliable.
An anime adaptation of the light novel by the author of Oreimo, Tsukasa Fushimi has been green-lit! Further chaos erupts between the siblings when a beautiful, female, best-selling shōjo manga creator becomes their rival. You can't have an Ayase+Kirino ending though, which is a shame really.
Masamune's little sister is Sagiri, a shut-in girl.
The 'Eromanga Sensei' light novel series provides plenty of source material, but will the second anime season ever happen? "This show is trash and If the anime were never intended to be more than a glorified advertisement for the Eromanga Sensei light novel, then the best ending point would have.
In the visual novel they do marry and have a family though (well they can). Masamune é autor de light novels, com pseudônimo de "Eromanga", ele escreve histórias extremamente pervertidas, mas é muito confiável. She even forces her brother to make and bring her meals when she stomps the floor.