Twelve year old Osamu Hirano is in love with his classmate Rio, but he doesn’t have courage to confess his love to her. One day he learns that she is going out with Shuichi and this makes him very depressed. Shuichi is also a classmate, but unlike Osamu, he is very smart and also good at sports. Meanwhile, Osamu’s 21 year old sister Yumi, who years ago ran away to... see more