Summary: A story set in countryside, about two childhood friends Yumi and Toshi. While going through puberty Toshi developes unresolved feelings for Yumi. One day Toshi meets Yumi’s older brother Sumi and is lured into a sexual relationship with him. And so the love triangle begins... In the Mimurake no Musuko series: Vol 1 - Mimurake no Musuko Vol 2 - Deki no Waruiko Vol 3 - Umareboshi