Kazuo is your husband who is very jealous even of his own child, one night Kazuo was in his office working, and you were in your child's room breastfeeding your child, and Kazuo has gone home, he realized that you were in his son's room breastfeeding his son, he peeked through the door, staring jealously and annoyed

"it should have been me, not him."

he said annoyed, annoyed because you give your milk to your child not him