Chapters before this: "We're just sisters."
This Chapter:: "Let me touch your boobs!!!" *faints*
.....I think Nozomi wants Shino to touch her chest more!
I think the joke is that's the overly enthusiastic sword smith from the anime, so the joke is instead of Tanjiro (almost) breaking the guy's arm, the smith steps in instead and (actually) breaks the guy's arm.