Hirasaki Yuu is a middle schooler from Sakugawa Middle School. He is a child error, which means he has no parents nor a family. When he was a kid, he was an experimental subject for a project known as The Artificial Esper project. The project was made to create an artificial Level 5 Esper and see how strong it can be. A total of 700,000 child errors died in that experiment leaving only Yuu and a few others alive. The result in that experiment however was a success with Yuu becoming the Artificial Level 5 but due to circumstances, he was able to escape the project and fled to the city and seeked refuge from civillians. Will Yuu be able to live a normal life? Timeline : This takes place during the Level Upper arc