yaegashi Hinome

\`\`If I have one more chance, I'll live my life without making any mistakes this time...'' - That's what the old man (45) wished for, and for some reason he becomes a high school girl. Rentaro, a middle-aged man who was popular in high school and is proud of that, spends his days being ridiculed by younger employees at work. But one day, you suddenly get a time leap and have to start over your high school days...!? You can live a popular life again! For a moment, Rentaro thought that he was not in his "past self," but in the body of a "plain high school girl in his class." Rentaro is confused. And we learn the true nature of the class at that time. Was my “popular period” an illusion?

Mashiro has been the target of bullying ever since he started high school. He tries his best to deal with the physical and emotional torment, but his days turn even darker when his younger sister, the only family in his life, goes missing. Discovering that the bullies are involved in her disappearance, Mashiro finds a personal revenge service called "Rental Murderers" and seeks their help to get even. However, he is unable to contact them after he pays their fee using all the money he has saved up for his sister's college fund and assumes he has been scammed. Pushed to his breaking point, Mashiro attempts to end his life but is luckily saved by an unknown woman named Kiyoka who suddenly appears. She claims to be an agent sent by Rental Murderers, and...thus begins an epic journey of revenge!