Ayuka, an ordinary high school girl who reincarnates in another world after she dies. A mysterious man, Jisariz, who always appears in pursuit of Ayuka. Ayuka's mission is to collect items called Rev Seals. To that end, Ayuka faces various trials.Then, the battle of the hero Sentika unfolds over Ayuka. What is the fate of the world that Ayuka holds? Is Jisariz an enemy or an ally? A shocking fact told by Jisariz to Ayuka will change the peaceful world. "The only way to return to your original world is for me to kill you or you will kill me." Ayuka, shake away your tears and resist fate! Jisariz, shout, Mobile Phone Transformation! The world was entrusted to these two!