What Happens If You Saved a High School Girl Who Was About to Jump Off?

Vol.4 Chapter 23: Side Ootani: Him and I.
Vol.3 Chapter 22: The Best Girlfriend
Vol.3 Chapter 22: The Best Girlfriend
Yusuke Yuki, who has spent his entire high school life studying and working part-time in order to keep his special student tuition exemption, finds himself desperately desiring a girlfriend. On his way home, he looks up and accidentally sees a girl attempting to jump off the roof of an abandoned building. A strange encounter leads to a new way of life and a love storey with the mysterious girl named Kotori Hatsushiro