Seventeen‑year‑old Nakaido Hirosuke is an ordinary high‑school student. One morning, while heading to the train station, he spots the beautiful Ajimu Yasuna and is instantly smitten. The two become friends, but Hirosuke struggles to confess his feelings, and Ajimu remains unsure of hers. As various events and people create obstacles that they must overcome, their relationship deepens and their emotions become clearer.