Kimi ga Asu, Kono Sekai kara Kieru Mae ni

Kiho, who has always studied since she was a child, did not have any friends when she entered junior high school. She becomes friends with a classmate who asks her to help him with his studies, but for a certain reason, she is further isolated from the rest of the class. Furthermore, one day after failing the high school entrance exam and entering her second choice high school, she loses the point of living and decides to end her life, when a fateful encounter occurs...!? (Source: Shueisha, translated)