Сабуро — ученик старшей школы, который не видит смысла в изучении истории. По его словам, это не пригодится ему в нынешней жизни. Но как бы то иронично ни было, всё происходит с точностью до наоборот. При случайном падении с высоты Сабуро переносится в прошлое Японии, а именно в период Сэнгоку. И падает он на самого Нобунагу Оду [織田 信長], который как две капли воды похож на Сабуро. Отсюда и начинаются приключения старшеклассника, которому пришлось воссоздать историю Японии от первого лица, став Нобунагой Одой.

"Who cares about what happened in Japan's past? It has nothing to do with my life."

With these words, carefree high school student Saburou finds himself unceremoniously thrown back in time to the Sengoku Era, landing directly in front of the legendary general Nobunaga Oda. Nobunaga, on the run from his retainers and wishing to rest due to his frailty, beseeches Saburou to take his place, as the two bear an uncanny resemblance. Although Saburou is still confused by his surroundings, Nobunaga hurriedly provides the boy with the necessary items to prove that he is the bona fide feudal lord and makes a hasty getaway.

Now a stand-in for someone he doesn't even know all that much about—though his modern experiences and knowledge are sure to help him—Saburou begins his unexpected quest to pose as the man who attempted to unite all of Japan.

[Written by MAL Rewrite]