Elementary school teacher Aoyama Ichiro is a dull person who leads a mundane life, but his biggest stroke of luck is meeting his extraordinary girlfriend, Sasaki Yukika, who he feels is too good for him. One day, he tries out a VR machine that was developed by his friend that apparently can reveal the past. Through this, he encounters something from Yukika’s past that makes him doubt her. Can he now accept and love everything about this girl, whom he had originally thought to be super pure? Adapted from the manga series "Kanojo to Kareshi no Akarui Mirai" (彼女と彼氏の明るい未来) by Taniguchi Natsuko (谷口菜津子).