After Kiryu's sudden withrawal to the world of sports, he lives his life in high school to experience the youth the everyone does but before the event happens, it is followed by another event. As Kiryu is given a pink weird letter which doesnt have a paper inside his shoelocker. Which is as ridiculous as it gets, Kiryu himself doesn't even know that this weird letter will be the start of a romantic comedy adventure about his youth.