A popular English teacher, Mizuguchi Risako has been kidnapped three days before the high school’s graduation ceremony. Four high school seniors received a mysterious challenge letter, asking them to solve…

Sougo Tokiwa who always dreamed of becoming a king encounters a mysterious girl who came from the future and warns him that he would become the king of all time,…

The story follows Nozaki Haruka, a middle school student who transfers to a new school in a small town because of her father’s work. Unfortunately, she becomes a victim of…