I know I'm six years too late but what manga are you reading where 26 chapters for this, is too long?
Dude, my comment was less than 3 years old... Please don't make me feel much older than necessary 💀
I don't remember what I was comparing this to.
Maybe I was reading hentai
While it's true that most manga take even longer to even start the relationship, I think most of the couples have sex soon after dating.
So, that's probably why I felt 26 chapters after marriage was too long.
Though I just remembered this manga,
Kono Kaisha ni Suki na Hito ga Imasu, where they started dating and sex early.