Oppai Paipai! Heikin Bust 100cm no Harem Seikatsu

Oppai Paipai! Heikin Bust 100cm no Harem Seikatsu is a Japanese erotic visual novel with entirely large-breasted heroines.

The player takes on the role of Yukihiko Kuon, a high school student who is approached by five big-breasted women — Charlotte Crista, Rinka Kagura, Ayumi Kurusu, Akane Misugi, and Miharu Kurimoto — after the death of his father. Apparently, Yukihiko's father wanted his son to get married before he died, and so had arranged for these five women to be sent to him. The game features individual routes for each heroine as well as a harem route.