Oppai Momitai tte Sakendara, Imouto no Tomodachi to Tsukiau Koto Ni Narimashita

When I Yelled, "I Want to Play With Some Boobs!", I Ended up Going Out With My Sister's Friend, "Oppai Momitai!" tte Sakendara, Imouto no Tomodachi to Tsukiau Koto ni Narimashita., Oppai Momitai~tte Sakendara, Imouto no Tomodachi to Tsukiau Koto ni Narimashita, 『おっぱい揉みたい』って叫んだら、妹の友達と付き合うことになりました。