In the summer of his high school's second year, Hayakawa ichii became supplementary lessons fellow with Tateboyashi Tsutomu, who was called T2 due to his initials, and the two quickly got close. Then one day, when suddenly pinned down and confessed by T2, Ichii's mind went blank. But when he was kissed gently and repeatedly told "I love you", he couldn't reject that devoting affection. Later on, T2 became Ichii's tutor without being asked, and Ichii was at loss on how to treat T2, while trying to figure out his own feelings...