The gentle and honest high school student, Ninako Kinoshita, had never experienced the feeling of love and spent her days unaware of it. One day, on the train ride home, she meets her classmate Ren Ichinose. Gradually, she finds herself drawn to the hidden kindness within him. Though a painful feeling like something piercing her chest begins to stir, her feelings for Ren grow stronger day by day. Eventually realizing that this feeling is "love," Ninako gathers her courage and confesses her feelings to Ren, but...