Ane Yone Quartet (2015)

The Hanabishi family and Hidaka family are next door neighbors and close buddies. The Hidaka family's only son Kouki was raised lovingly by the four Hanabishi sisters like they were brother and sisters. One day, the Hanabishi and Hidaka parents were leave on a long term overseas business trip together. They inform Kouki that on their return, he will be betrothed to one of the four Hanabishi sisters - office worker Yurina, sweet Momone, maid-like Saori and childish Anzu. In the meantime, he is to spend the summer vacation looking after all four of them. However, each of them has romantic interests in Kouki. Who will he choose?