They exiled the condoms in a bunch of manhwas/mangas, aka H-mate, Household affairs and any other "well we just met but lets fuck"
I thought about that too. I mean, there is still the pre-cum, not to mention the STDs and STIs he could contract; if he gains one, he could turn into a human biological warfare device.
They exiled the condoms in this manhwa. I don't know. Does the author think that pulling out before climaxing protects from pregnancy?
I don't know why, but this is a big drawback for me.