Himitsu na Kimi ni Koi wo Shita.
ヒミツなキミに恋をした。
A student named Naoto Shizu is often described as indifferent and withdrawn, keeping others at a distance. Another student, Yuu, becomes curious about him and, while returning home one day, stumbles upon something personal about his life. As she discovers more, the enigma surrounding him deepens, and her interest in learning about him intensifies. A question remains: what is the most important thing Shizu has kept hidden?