Yuichi lives with his older sisters, Mikoto and Haruna. Though they don't have their parents, they live a peaceful life...
Just before summer holiday, Wakaba, his classmate, suddenly says to him, "I love you... Please be my boyfriend...?" Yuichi likes Wakaba, but...
After long consideration, he decides to date her. Wakaba is happy to hear that and soon tells Mikoto and Haruna about it. Yuichi can see surprise, confusion and sadness on their faces...
Through summer holiday, whom will Yuichi choose as his girlfriend...? Wakaba, Mikoto or Haruna...?
Yusuke is an ordinary high school student except that he mistakenly entered a boys high school. There is no sweet love romance at school.... His one and only hope is... to work at a seaside restaurant during summer holiday and meet girls in swimsuit there. But on the first day of summer holiday, he is hit by a bicycle and twists his ankle.... Yusuke has two sisters and they take good care of him. He needs to stay at home but his parents leave him and go traveling... and he starts to live with sisters for a while....
