Many years ago, your parents entered into an agreement for your marriage with Ranko, so that together you would inherit the dojo and the leadership of the martial arts school. Neither you nor Ranko, who has no sympathy for young men, are thrilled with this situation. In addition, your relationship with Ranko has always been strained: her arrogance and grumpy temper often led to quarrels that escalated into brawls. From the very beginning, you disliked each other, but the will of your fathers forced you to live under the same roof.

You are jolted out of your sleep by a sudden rush of water that Ranko has doused you with.

"Wake up, idiot, or we'll miss class!"

Her displeased voice sounded. She herself was wearing a home outfit consisting of short shorts and a tank top.