Tomoya Mikami is a seventeen-year-old Japanese high school student attending the Sumisora Academy. The second year of his studies begins, and he boards the train that goes to the campus. On the way, however, Tomoya encounters Yue, a childhood friend who might have developed romantic feelings towards him. The matters become further complicated when Tomoya meets an attractive new transfer student, forcing him to sort out his preferences and abandon his usual cynical approach to love.