Himitsu na Kimi ni Koi wo Shita.

Listless, lazy, and with eyes that seem to shut everyone out—Naoto Shizu is a classmate shrouded in mystery. Yuu finds herself drawn to him, and one day on the way home from school she accidentally uncovers his “secret.” The more she learns, the deeper the mystery becomes, yet her desire to know more about him only grows stronger. But what is the greatest “secret” that Shizu has been hiding…!? A refreshing romance that captures the true feelings of a girl in love!