Riki Naoe

His parents died when he was very young, around the time he was diagnosed with narcolepsy. The world surrounding the Little Busters is eventually revealed to be an artificial one created so Riki and Rin can grow stronger after a bus accident in the real world. In the first version of events, only Riki and Rin survive. Riki confronts the source of his narcolepsy, grows stronger, and when the accident occurs again, he and Rin manage to save everyone.