墜落JKと廃人教師 [Tsuiraku JK to Haijin Kyoushi] Series by Sora, Sora Mizuki

Mikoto Ochiai is ready to jump off of the rooftop of her high school's building after she got rejected by the boy she loves. However, her physics and homeroom teacher Jin Haiba who suddenly appeared on the rooftop for a smoke, talked to her and saved her from falling down. He even asked her to go out with him...How will things go between the smart and calm Mikoto and her seemingly carefree teacher Jin?

灰仁是個沒用的成年人，卻又是個偶爾會讓人刮目相看的教師，扇言則是一直被他糾纏不清的高中女生。因為長得帥又難搞的一年級生偶像高峰一馬的出現，影響了兩人的戀情｜｜？「可以到處跟著妳的人只有我，ＪＫ。」不斷加速，危險的吊橋理論愛情！

慢慢開始有了一點點的改變，垃圾教師․灰仁與高中女生․扇言之間的關係。隨著夏天的到來兩人之間的戀情，開始變得更加電光火石－－。「看你這麼畏畏縮縮的，是要怎麼跟女高中生談戀愛啊。」即將失控的，危險的吊橋理論愛情！