Seikimatsu Blue

"In July 1999, we triggered the end of the world." Kousaka is a normal high school girl living a normal life in junior high. But one day, she comes across her bullied classmate Tohmine being followed - not by one of the other kids, but an oddly shaped monster called the "Great King"! Despite thinking she really shouldn't get involved with this, Kousaka can't turn her back on Tohmine and decides to help. But this brings forth a chain of events that might terrorize their future... This volume also includes the story "Insectoid Summer," where high school girl Kanako stays with her lover despite him taking on the body of an insect. (Source: Manga Planet) Note: Includes the two-part story "Kaichuu no Natsu (怪虫の夏)".