@hahalery I think so too. Compared to Chapter 1 Seto, our boy has come a long way. Anjou-san comes up & literally sits on his head, but Seto just lets it happen, notes that she's taking her sweet time about doing it, then contemplates the softness of her butt. If she had done this in the first chapter, he would have died of a frickin' heart attack.
He lets Anjou-san throw herself over him & pull him away from his work, banters casually about her silly sign ideas, & finally goes with the flow & kicks back, lying on the floor right next to her. No flinching or stuttered exclamations through all of this. Yep, Seto's getting pretty acclimated to having Anjou-san wound up in his life. Looks like progress to me.