Anekurabe  

あねくらべ, 姐姐比一比

When Shun started high school, he knew what was coming. As soon as he entered his new school, a group of four stunning young women appeared around him. They were Rio, Miku, Nana, and Yuri - the same girls that Shun had known since kindergarten. These four ladies would compete against each other to win over their beloved Shun's heart.