Ichimonji Hayate, aka Monji, is an energetic ordinary highschooler. Chatting about nothing with his best friend Kirika, going home with the senpai that he admires, and spending peaceful days... that's what he thought. One day, he met a mysterious girl, and suddenly she gave him a cellphone called D-phone. It was "actual fact" about gathered urban legend site, linked to the "8th world." He was chosen to be a main character of "100 stories." To Ichinoe Mizue, a new transfer student whisper to him "why didn't you answer to the phone?"