Naoe Riki was a boy living on the brink of despair. The one to reach out to him was Natsume Kyousuke, a just boy who called himself the leader of the "Little Busters." Every day from then on was like an endless carnival, and the pain in Riki's heart slowly ebbed away.
A few years later, the five of them are living in the same school dorm, still living every day like a carnival. But when Kyousuke starts to look for a job, Riki worries that the five friends will drift apart. It's always Kyousuke who does something to cheer him up when he's feeling this way.
"Let's start a baseball team. We'll call it... the Little Busters!"
And so began their search for new friends. The Little Busters are running at a sprint through their days of adolescence!