Sekaiichi Hatsukoi OVA

No Love's Like to the First.

A look back at when Ritsu and Takano used to date back in high school, but broke up due to a misunderstanding. Ritsu Onodera meets and immediately falls for upperclassman Masamune Saga. Keeping his distance for the next three years, he unexpectedly runs into Saga at the school library and finds himself confessing, and is even more shocked when Saga says he has no problem hanging out with him. At Saga's house events take an unexpected turn, and Ritsu finds himself in a relationship with the boy of his dreams...