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. Matsunaga Yoshihiro 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, Morisawa Nao, 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: ANN)

Following the Little Busters after they lost their first baseball game, the team decides to have a pancake party. It has been almost one semester since the return of Kyousuke Natsume. As usual, Riki Naoe continues to help the Little Busters' members—both old and new—with confronting their inner struggles. However, strange happenings begin to occur, leading Rin Natsume and Riki closer to unraveling the truth behind the "secret of this world." Little do Rin and Rikki know, their discovery will end up changing the peaceful everyday lives created by the Little Busters once and for all. Little Busters!: Refrain brings a conclusion to the colorful stories of its ensemble cast—forged with the weight of emotions and strengthened with the bond of friendship—as they come to terms with their regrets and weaknesses. [Written by MAL Rewrite]

Following the Little Busters after they lost their first baseball game, the team decides to have a pancake party. It has been almost one semester since the return of Kyousuke Natsume. As usual, Riki Naoe continues to help the Little Busters' members—both old and new—with confronting their inner struggles. However, strange happenings begin to occur, leading Rin Natsume and Riki closer to unraveling the truth behind the "secret of this world." Little do Rin and Rikki know, their discovery will end up changing the peaceful everyday lives created by the Little Busters once and for all. Little Busters!: Refrain brings a conclusion to the colorful stories of its ensemble cast—forged with the weight of emotions and strengthened with the bond of friendship—as they come to terms with their regrets and weaknesses. [Written by MAL Rewrite]