Kira Aso is a high school student with an introverted personality. When she was a child, her father died in a car accident caused by a motorcycle gang. Now, she sketches the sea every day during her spring break. One day, Rei Kashino rides his motorcycle and sees Kira Aso sketching the sea. He sits next to her. Kira isn't used to talking to guys and isn't friendly to Rei Kashino. The new semester begins. Kira Aso meets Rei Kashino as her classmate. Rei Kashino doesn't get interested in a particular style of girls, but he becomes interested in Kira Aso. Harumi Sugihara, who likes Rei, and Tatsuya Kida, who is Rei’s friend, are surprised by Rei's interest in Kira. Makio Kirishima graduated from the same middle school as Rei Kashino and transferred to the same high school as Rei. The relationship between Kira Aso and Rei Kashino changes. (Source: Wikipedia) ~~ Adapted from the manga “MARS” (マース) by Soryo Fuyumi (惣領冬実).