The Boy with Red Flag

When another school year starts, Kirsten was listed on the section she's not expecting to spend her 9th grade life. It's third to the last section on their grade level. Since they can't change their sections anymore, she just accepted her destiny and look forward on what will happen. During the first day of classes, she bumped with one of the weirdest guys on their classroom named Joe. As time goes by, the two got close to each other and became friends. Kirsten didn't notice that her feelings started to grow for Joe until he found out that the guy shows strange acts. Later on, Joe was diagnosed with mental illnesses and Kirsten knew his negative traits. Are those traits will make Kirsten cut off her feelings to Joe? Does Joe will recover from his mental disorders?