
I don't understand the people who aren't okay with cousin married each other but okayed when step siblings being together like broo why are you like this? To me cousins are extended family and there's nothing wrong being together. But if it's step siblings, that's so wrong in many other ways.
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Anyway Nio and Suoh deserved each other and they aren't even family. The only family relation he had is with Masoh. Only him.

Cousins are blood related. Step siblings are only related by marriage. Although many might be uncomfortable if step siblings grew up together luke biological siblings, it wouldn't be actual incest.
Historically cousins married in western cultures until the early 1900's. Now it's illegal for first and sometimes even 2nd cousin's to marry because it leads to birth defects. However, there are still many cultures around the world that allow cousin's to marry and don't see a problem with it.
Lolololollololol i can't