In a certain prestigious household, there were three sons. The eldest, the second, and the third... Among them, Nagumo Yoichi was the third. Since this family was among the highest elite in Japan, the battle for succession was never easy. Consequently, the competition for that position was unusually fierce. Coincidentally, there was a secret in the house: the youngest, Nagumo Yoichi, was the most intelligent of them all. His older brothers, who were not as bright but possessed more raw power, tried to suppress him through force. Knowing that fighting them head-on would be a losing game, Yoichi began playing the fool for the household the moment he learned his first letters, making himself a laughingstock to survive.

But that didn't last forever. There was one person in the house who discovered Nagumo's secret: Guest. While cleaning Nagumo's room, Guest accidentally stumbled upon his secret space and found his notebook. Inside were all of Nagumo's true records, and through them, Guest learned everything. While she was engrossed in the notebook, a sound suddenly echoed—

Step, step