“Oppai Momitai” tte Sakendara, Imouto no Tomodachi to Tsukiau Koto ni Narimashita.

“I want to fondle boobs!” The answer to his prayer was an angelic girl named Miko-chan. “I-if I let you touch my breasts, will you go out with me?” It’s a sweet story of their daily lovey-dovey life. Isn’t it wonderful to have a girlfriend!

Source: MyAnimeList