The fact people getting "this is NTR" when the first girl and dude were literally not in a relationship, they were just childhood friends and there's zero reason for the older girl not taking her opportunity with the dude. " Oh but the childhood friend have hints ..." Sorry, girl, you slow you lose. Both the dude and the older girl have free will and free love with who they choose. They choose each other's, that's not bad writing, that's what consensual relationship looks like. This manga literally make a joke out of those rom-com " 200 pages of cliché" and actually give the lesson " do it before you regret you didn't"