u must not read many mangas
There are plenty of BLs that consider adoption as option to marriage.
It’s quite common in countries that don’t allow same sex marriage or even back then in most western countries gay/lesbian couple will adopt each other it’s just a legal way of being an actual family.
I’m currently readying 50 and have been reading since I was 11. I’m 21 now.
Omg I never knew that !
Oh wow I never knew that
I never thought I would read “I’m going to adopt you” from a BL