Hioki, a second-year high school student, is separated from his close friends in class and finds himself alone when it comes to deciding on groups for the school trip. However, he is invited by a boy from the same junior high school to join a group of four handsome guys. At first, Hioki is confused by the popularity of the school's four members, who are known as the "Four Heavenly Kings." However, one of the four, Tokai, always looks out for Hioki, and they gradually become closer...
