Tobioriyou to Shiteiru Joshikousei wo Tasuketara Dou Naru no ka?  

What would happen if you saved a high school girl who was about to jump off a cliff?

Yuusuke Yuuki was a high school student who spent most of his time studying and working part-time to maintain his scholarship. One day, while on his way home from school, he felt lonely due to his thoughts about wanting a girlfriend. As he looked up at the sky, he saw a girl about to jump off a rooftop of an abandoned building. "Why are you doing something like this?" she asked. "Because I don't have any reason to live," she replied. "Wait," Yuusuke said, "It would be a shame for such a beautiful person to die." "What do you mean?" she asked. "Rather than dying, be my girlfriend," Yuusuke suggested. And so, a new love story and daily life began with Kotori Hatsushiro, a mysterious girl whom Yuusuke met in a strange encounter.