[Machine Translation] Nobuo was a dull teacher. In the other world, he used his "alter ego skill" (disguise skill) to create himself in various forms and occupations, and was active in various fields. However, his peaceful days come to an end when an all-out war between humans and demons begins. The Holy Duchy of Altar is preparing to invade the demon territory. When the alter ego #4 discovers that Princess Farrah is an imposter, he and Sayo take advantage of this opportunity to escape from the country. Meanwhile, Nobuo sends a disguised "alter ego" disguised as a beastman of the White Tiger tribe to gather information on the demon tribe side as well. He steadily closes the distance with the Demon King, but the Demon King collapses during the battle. Then, for some reason, he leads the demon tribe to fight against a group of heroes. Among them is alter ego #4... The war between humans and demons intensifies. What is the purpose of the fake Furla who controls it behind the scenes? And finally, Nobuo meets the main heroine - the exhilarating reversal fantasy, now complete!