Why I read this series: Dad with body tempering for days who wants even more body tempering is targetted by a cross dressing woman for marriage while his daughter considers becoming a deadly warrior and his sons continue to be strong-derp.
He thought Metal Ki wasn't affecting him, but it's warping his personality to be more arrogant and aggressive. Even that tiny amount is changing him. These past chapters, they're trying to get that Ki out of his system.