Gachi de Itsudemo Hatsujouchuu ~Mannen Hatsujouki de Sakarippanashi na Usamimi Musume no Mendou o Miru Koto ni Narimashita~

You know how rabbits are always horny?
Well, you've just gotten yourself a new rabbit (a rabbit girl, really) from your friend.
She looks quite sweet and innocent, but she's still a rabbit, after all -- so she's always ready to hop into bed!

[From DLsite English]