This is a fan-made work based on the popular light novel series A Certain Magical Index, incorporating elements from the series Karakuri Circus. A puppeteer, who is also a time traveler from another world, enters Academy City to study and live a normal life. Secretly, they must also confront enemies who seek to steal the original grimoires in their possession, while protecting the safety and peace of Academy City. ...World War III? They call that a world war without the involvement of the mainland?