Pretending
He was aware of his daughter's growing feelings towards Kazuma. He pretended to act in a laid back manner in front of the two, sending them off on ridiculously meaningless missions meant to set them up. After they'd leave, his countenance would change to that of a real family head of jutsu users, serious and deadly. It was then that he would call upon the jutsu users in the family and send them off on the real missions the family was called upon to for.
He may be the family head, but he is also a father. One who would not allow his precious daughter off into unnecessary danger.
