
When do they give rings to each other?

I've read it whole, still didn't find. It's not there even in occupation to beloved. Not even in Sora to Hara but I'll re-read it. I guess some chapters are missing, coz in blanc there's a mention of Rihito going to family register for their marriage and that causing him insecurity and also one of the reasons for their fight there.

https://myreadingmanga.info/nakamura-asumiko-occupation-beloved-eng/#
I think this one is it ¯_(ツ)_/¯
I have full faith in my mature babies. They won't fight over petty stuff. They'll talk it out. My babies are very wise.