Zenkichi thankfully doesn't have a heart attack from hearing that but the lock he offers to Sumire is...something resembling to it. Like he needed a moment to really let those words settle before the shock took form into something unpleasant...

It hit him in all the wrong places. Made him think of how the Kirijo group controlled young unwilling teens or how Akane's soul was exploited by-

"Jesus christ," he blinks at her. "That's wow I am sorry- I am still trying to figure out where his line of thought was going..? There have to be far better ways to go about this." And why the hell does she still refer to him as Dr Maruki?! After all that?

"...Are you doing alright now?"