Story: This is a Rei and Tatsuhiko’s story. Tatsuhiko is lazy lonely hikikomori man. Someday he decide to achieve the Project. The purpose of The Project is becoming super human who have evolved mind and real human girlfriend. Tatsuhiko’s “in brain girlfriend” Rei supports Tatsuhiko and his project. But there is sad destiny. If Tatsuhiko get real human girl friend, Rei will disappear because she only exist in Tatsuhiko’s brain and his imagination! But Rei loves Tatsuhiko deeply truly. So Rei helps Tatsuhiko and his project devotedly, even though the help and support lead Rei to disappearance of her existence.