Little Busters! The 4-Koma. Little Busters! The plot revolutionizes Riki Naoe, a young high school student. The main protagonist. His parents died when Riki was a child and he was deprived of hope. What rescued him was a group of his friends who called themselves the Little Busters, took out Riki and played with him in need. He loved to play with them, and his concern was gradually growing. When the story starts, they attend high school in their second year. You are all hanging out and enjoying your school life together.