Man, I find the MC really darn annoying and unlikeable. At the ch 1 he was a total simp, and in ch 173, he's still the same simp who hasn't had any real character development at all.
If this man does not come out with his true feelings this time around, I'm done with this manga! You will not string me along author, you will not! #NoMoreBlueBalls.
You know the trope : she is drunk, Kazuya will spit the truth, then she'll sober up and forget everything (or act like that). Or Kazuya will mess up.
The author will drag his manga to the end of the world X)