Remains a cute, cozy (in vibe, not heat!) romance. I like seeing the small steps forward in confidence Koyori makes as they overcome each hurdle in their relationship. 
The main conflict that opens the volume is kinda flat in that Saito is such a clown villain. 

Seems like she might make a reappearance? So, maybe her role as an antagonist will develop into something more interesting, but

as it is right now she appears out of nowhere in the last volume with this mustache-twirly evil plan to...*checks notes* get back her middle school boyfriend, who she presumably has neither thought of nor spoken to in over a decade. But suddenly she's super upset/obsessed that he's dating his childhood friend? ...ok. I wish Koyori showed as much of a backbone when dealing with Saito as she does with Sosuke.

I love me some hurt/comfort so the way the volume closes is cute.