A Boy named Hiro Berzelius who relied too much on his childhood friend Rena Harlan, Rena is going overseas the moment they graduate from highschool to study abroad. However, Hiro who relied too much on Rena started breaking down as he dreams of Rena moving away and his heart could not take for it to happen. Follow as Rena and Hiro overcome the problems their going to face and solve while the countdown to march graduation ceremony is coming near.