Coffee to Chocolate Parfait ~Kanojo to Watashi no Dog Days, Moshikuwa Hajimete no Shigyaku to Kyoujun~

Rika grew up in an overprotective environment, but now she enters university and starts to live alone. But when Eriko suggest her a surprising part-time concerning Eriko's younger brother Hicky, Rika accepts it.

[From vndbreview]