What must be done to grant her aspirations? As his exhausting December comes to a close, Sakuta approaches the end of his second year of high school. With Mai set to graduate in her third year, their time together dwindles. Meanwhile, his sister, Kaede, slowly gains the courage to explore the outside world. However, she shocks Sakuta with her newest and biggest goal - to attend her brother's high school! While Sakuta desires to assist her through her challenging goal, he questions if it is truly what is better for her or what she genuinely desires.