(Sumita Kazuasa, Shinya Murata) Isn't It Too Much? Inaba-san/Hoshi Gari Sugidesho? Inaba-san chapter 10
Kareshi to no Ecchi ga Jouzu ni Dekiru you ni Ecchi no Renshuu Aite o Shite kureru Onna Tomodachi | My Female Friend Became My Practice Partner So I Can Get Better at Sex with my Boyfriend