高校三年の三尾朝陽は、教師・北原史誓に恋をしている。ふたりは鍵を掛けた社会科準備室で、放課後の一時間、キスをして気持ちいいことだけをする――。やさしいが、決して深入りはさせず、「いつかきっとぼくを忘れる」そう呟く北原。卒業間近になり、北原は朝陽を避け始めるが、朝陽はこの恋をあきらめることはできず……！？漫画とのコラボ企画、待望の小説化。続編も同時収録。 After failing Japanese history, Mio was forced to go to extra cram classes. Finding his Japanese history teacher, Fumichika, to be quite understanding and kind, Mio couldn't help but feel an attraction towards him. After he confessed, Fumichika told him that his feelings wouldn't last but if he could accept the risk of not having his feelings reciprocated, then they could start a physical relationship. When Mio desires more... Related series : Ano Hi no Kimi wo Dakishimeta nara (Spin-Off)