Spoiler.........
Anyway I read this manga from a Chinese web site up to chapter 200 something.
Anyway about that little boy, when that blonde lady introduced that boy in front of everyone and claiming the boy is Caitel son, Caitel didn’t say anything, or denied the claim, because he want to see what the blonde lady was scheming. But in private, he denied that he sire that boy in front of his friend the chancellor. Caitel has 2 valet point, 1) the boy is younger than Ria, 2) he didn’t visit the harem even since Ria is born. If the kid is older than Ria than there might be a possibility that he sire the boy (don’t forget all kids Caitel has before Ria has been kill along with the women, Ria is the one and only Caitel’s kid that are still alive) since he stop going to harem ever since Ria is born than there is no way he could sire a son who is couple years younger than Ria.
Also in order to succeed the throne, it doesn’t have to be a boy. The requirement is they have to have silver-red hair. The more silver they has the more fairy blood in their bloodline, also mean more powerful and pure. Back then Caitel father sire 30 something children and only 3 of them have silver-red hair. And only Caitel has more silver in his hair, that why the 6th prince(has hair color similar to the blonde lady little boy) have to kill Caitel in order to succeed the throne. If you paid attention you will see that Caitel father, Caitel and Ria have the same color silver-red hair. Ria and the boy claiming to be Caitel son, the boy hair has more pink. With those information above meaning blonde lady will plan to kill Ria, in order for the boy to succeed the throne. Also the boy might be the 6th prince kid cause they have similar hair color. Since all the Caitel brothers have been kill by Caitel, only the 6th prince still remain in missing.
Sorry this is too long.
Lol that woman might be either the dumbest or boldest person to go and try to pass of a kid as Caitel. Does she consider Caitel to be dumb that he doesn't know who and when he slept with someone to know if a child is his? She herself said back in chapter 57 or 56 that Caitel hadn't visited her since he came back from war after hearing that Ria was born and since he returned he made no attempts to visit her so how on earth is she saying that her 4 years old son is Caitel? This woman must be crazy.
Even she brought an older boy, she wouldn’t have won. Since she live in harem, there is no way she can stay pregnant without Caitel knowing (never wanted a kid) Mostly when the women in the harem get pregnant, they usually will tell Caitel right away and wanted to be crown empress now that she is carrying Caitel kid, and that is when Caitel kill the lady and the kid.
I'm so freaking confused . I mean I feel like he's not bc I feel like Caitel's been so obsessed with Ria that he wouldn't even look at another women but then again the kid looks like him a little bit. Does anyone know? Like has anyone read the raws and has an actual answer?