Tobioriyou to Shiteiru Joshikousei wo Tasuketara Dounaru no ka?

Yuusuke Yuuki, a high school student focused on academics and part-time work to keep his scholarship, one day feels a sudden longing for a romantic relationship. On his way home, he notices a girl preparing to jump from an abandoned rooftop. He confronts her, and she expresses having no reason to live. He suggests she become his girlfriend instead of ending her life, surprising her. She agrees, and the two begin a new life together. This forms the start of their daily interactions and a developing relationship with Kotori Hatsushiro, a girl marked by deep despair.