The Little Busters' trip was a complete success, and summer vacation has finally begun. Everyone heads home for a bit to see their families. Everyone, that is, except for Riki (who has no family) and Kud (whose family lives in another country). One day, an accident occurs that floods the men's dormitory, which leaves Riki with no place to stay. Luckily, Kud is willing to lend a hand, and she's also looking for a roommate. [Adapted from [url=http://forums.animesuki.com/showthread.php?p=2838215#post2838215]Animesuki Forums[/url]] A spin-off of Little Busters! that focuses on Noumi Kudryavka and Riki Naoe's after story.

Kyousuke comes to Riki’s classroom one day, telling him something terrible has happened. He takes him to another room and they discover a truly awful sight… Mio Nishizono’s corpse. No, she isn’t actually dead. But there’s something very strange about this, namely the fact that Mio was "murdered" in a locked room. Riki is promptly tasked with solving the mystery of how this could have been possible. Mission Start! [From [url=https://ritobasu.wordpress.com/2016/01/25/nishizono-mios-locked-room-murder-mystery/]Rincchi's blog[/url]] This game was released with the first Blu-ray Disc volume for the Little Busters! Refrain anime.

Riki was a child when his parents died, leaving him hopeless and depressed. What saved him was a group of four kids calling themselves the Little Busters. They took Riki out and played with him during his time of need. He really enjoyed being together with them, and his grief gradually faded away. Now in his second year of high school they still hang out, fight and live together, and enjoy their school life. Little Busters! contains several mini-games, including a baseball practice game and a duel battle system.