I knew it. Among the noble families, the Agriche are monsters, so incest must be as normal...

incest IS the norm for noble bloodlines in the medieval era -_-

Can't help it, people become dumb as time passes by. Like me for example.

First of all, incest, specifically sibling incest, is a taboo even among royals in medieval Europe. It WAS not the norm, at least in medieval era. In fact, one of the charges for Anne Boleyn's execution was incest. And since when did the webtoon occur in medieval era? This is purely fictional. Anyways, next time pay attention to history. (づ￣ ³￣)づ

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