Logic isn't Yaichirou's strong suit so his first reaction is a long stare, but he figures it out. His expression reverts to polite stoicism. It seems appropriate for such an evasive answer, and it conveniently lets him avoid his own feelings on the matter. Empathy is as useless as it is uncomfortable.

"I could help you you find something age appropriate if you like, " he offers, still staring out the window. "I've survived three baby brothers, so I may be of some use."