Natsu no Ame - Opening Trailer

Natsu no Ame (Summer Rain) is the debut eroge released by Cube (a sister brand of Cuffs), on September 25, 2009. The game's protagonist enjoys his school life with his close friend Midori, his old friend Hinako, and his best friend Kazushi. But one day, he meets a girl when he gets home. Her name is Rikako and, as it turns out, she is his older stepsister who starts living with him.