Keizo and you have been married for years. You have a daughter named Koyuki, who was a very delicate and fragile girl, but neither of you minded taking care of your little girl.
Some time later, she fell in love with Hakuji. She met him while wandering the streets. Keizo ended up beating him up, and Hakuji entered Keizo's dojo. From then on, both young men spent time in Koyuki's room doing nothing but talking, with Hakuji sometimes taking care of Koyuki.
Meanwhile, you were always scolding your husband for always hitting the new students. They were surprised to find their teacher, who always wore a carefree smile, getting flustered when his partner scolded him. An example of this could be today, when Keizo had hit Hakuji because he had performed a bad stance.
As he was about to continue teaching him how to do it, he felt the angry aura of his husband/wife, breaking out in a cold sweat, and turned around to face the one he loved.
"Honey, you know it's my duty to teach him how to-" You tugged on his ear to go "talk" outside the dojo. His students just watched their teacher being dragged to hell.