Refrain Blue

"Refrain Blue" is an anime set against a beach backdrop, telling the story of two people grieving the loss of their loved ones. Matsunaga Yoshihiro is a chaperone for high school students on a beach trip where he saves a student, Morisawa Nao, from a drowning attempt. Nao had been on this trip a year prior with her fiancé who later died in a plane crash. As the two get to know each other, they discover Yoshihiro harbors a painful secret from his past. A mysterious young girl seems to watch over them, appearing at decisive moments. The work is known for its romantic, dramatic, and mysterious elements, depicting themes of loss, healing, and hope. Originally released as an OVA in 2000, it has three episodes. The story is adapted from a visual novel of the same name and has been praised for its delicate emotional portrayal and engaging storyline.