@brickandstuff yea, sometimes indeed. A lot of times though it just causes much more infights for power, and at times with the king being backstabbed by any one of their bastards (or even their main heirs).
of course he does....what kind of king doesn't an illegitimate son or two o3o
(i'm trying to be sarcastic since....MOST kings i've seen in manga/manhwa have them lol)