In 1550, a historic year marking the expulsion of the Ashikaga shogunate by the Miyoshi clan, the collapse of the Muromachi shogunate began. In the small domain of Kutsuki in Omi, the 2-year-old heir, Takewakamaru, was a reincarnation of a history-loving modern Japanese person. Just as he thought he could test his modern knowledge and personal abilities, his life took a drastic turn when his father, Harutsuna, was killed in battle. His uncle was made the new heir, and Takewakamaru was sent as an adopted child to a poor noble family with no power. However, he does not give up. Even without power, he plans to make a name for himself in this chaotic world using only his wits!