Refrain Blue is a oVA anime that premiered in summer 2000.

About the production: the story comes from a visual novel, there are 3 episodes of about 30 minutes and its current status is "finished".

Its main genres are drama, ecchi and romance, with themes such as Male Protagonist.

On AniList, Refrain Blue has an average score of 52%, an average score, and appears on 1,137 users' lists.

A trip to the beach turns out to be more than expected for two people who are mourning the losses of their beloved. Perhaps a mysterious girl known as the "Umi Warabe" can help them to heal their wounds and move on with their lives. Yoshihiro Matsunaga is the chaperone for a group of high-school students on a summer trip to the beach. One night he saves one of the students, Nao Morisawa, as she attempts to drown herself. She had been on this same trip a year ago, with her fiancee, who was later killed in a plane crash. As these two get to know each other, we find that Yoshihiro also has a painful secret from his past. Watching over everything is a mysterious young girl who somehow is always there at decisive moments. (Source: Anime News Network)

Official synopsis from AniList.