Oh I actually have 1. It’s more like one is bickering, the other is taking it, but grumbling abt it lol. It’s new, but I love it sm already.
First Love Makeover:
https://www.mangago.me/read-manga/first_love_rehabilitation_log/
i wanna know lesser known titles too, it absolutely cracks me up (≧∀≦) recs for tax:
new-ish ones with lots of bickering:
mint candy love
alpha equation
missing pepper case
and older faves with lots of bickering lol:
protect your purity
you get me going
cant think straight
semantic error
frenemies
dreaming of the dokkaebi

Recommend me bl couple that fighting like an old married couple. I need to see the silliness