Agreed. The occasional reaction shot, mostly for scenes taking place at the office where it would make sense for them to be there, might have been okay every once and a while. Wasting whole chapters just to watch them watch the main characters is just ridiculous.The "Friends spying on then date" trope is the worst. Half this manga is dedicated to reaction shots from these 3 and it adds nothing. Early on sure, help push her into dating but it's almost parody at this point.
And right before they kiss, and they inevitably spot the trio in the bushes and ruin the moment, just remember none of this trope needs to be here.
Confessions are serious business.They went all out with the equipment huh ^^;