I wish people would start to see relationship related stuff exactly like that. No social pressure and not doing things because it's called normal, but doing things your way and at your pace
That's probably not all that common in Japan, from what I've been told. Okay story time:
A while ago on a Discord server I'm on I somehow ended up having a conversation with a(n English fluent) Japanese woman about how people tend to go about relationships over there. The way she described it, sounded like a lot of people of both sexes basically have no idea whatsoever about how to approach their partner "organically" (in the sense of flexible, spontaneous and "natural"). Instead they default to a somewhat vague set of ritualised assumptions about how you 'should' do it and basically try to play out roles in a script whose meaning they don't really understand, and then often get very confused when people - being the messy and complicated critters they now are - don't respond according to the "formula."
Like two people attempting to communicate not really so much with each other as individuals, but with sort of vague abstract Platonic ideals of each others' "roles" and duly getting Hell of a lot of wires crossed. (Doesn't really help that a remarkable number of people over there reach adulthood without having meaningful casual contact with the opposite sex outside family...)
All of this is obviously anecdotal but it does mesh well with well-attested quirks of Japanese culture and society - particularly an absolute hard-on for conformity and social rituals; Yukawa's reflexive assumption here of there pretty much being a sort of checklist a dating couple should complete fits the description to a tee.