Seventeen-year-old Nakaido Hirosuke is just an ordinary high school student. One morning, as he arrives at the train station on his way to school, he spots a beautiful girl named Ajimu Yasuna and immediately falls for her. The two get to know each other and become friends, but he cannot confess his feelings, and she remains unsure of her own. As various events and other people present obstacles for the potential couple to overcome, their relationship begins to develop, and their feelings become clear.