"Kasumigaoka-san, I like you, please go out with me!" "Sorry! I prefer someone more mature, you are not within my consideration range!" "Kitagawa-san, please go out with me, I..." "You are a good person, but we are not suitable!" "Nagase-san, forget it... forget it..." Traveling through the world of daily anime, Byakuya thought he could start a relaxed and happy love life, but after confessing to countless anime heroines, he was rejected, and eventually became the laughing stock of the whole school and a loser. From then on, he was motivated to pursue his career and suddenly found that he seemed to have the ability to brush his identity. In the Naruto world, he is Uchiha Byakuya who is about to face the night of Uchiha clan extermination, in the world of One Piece, he is the legendary pirate of the Rocks Pirates, in the Inuyasha world, Seshomaru is his stupid Odo... Arad, Valoran, Fairy Tail and countless other worlds, Bankai travel + daily life: Spring Festival, passerby heroines, changing dolls, Nagase-san, etc.

For unknown reasons, he arrives in a parallel world, Japan, and accidentally possesses the body of a pre-high school student who died unexpectedly. Surprisingly, he inherits no memories. His first challenge upon arrival is a language barrier... Just as he struggles to communicate with his family, a heavenly voice arrives, signaling the activation of a high-tech system and the distribution of initial translation tools. This is the story of a man of above-average intelligence and virtually no physical strength, caught in a classroom where strength is paramount.