Mentioned this before but once more (bars), I’m really glad that the romance in this manga feels like a romance between adults.
Hajime doesn’t shy away from interacting with Usagi’s family. He loudly and proudly speaks comfortably with all of them, even with Usagi despite being in front of her family.
So many manga would make this type of scene a super embarrassing thing where the male love interest is super shy and whatnot, but this is a HUGE breath of fresh air.