@deathmailrock Mhm, i never thought there was much "steam", but still, as its explained his mom was ready to do it right and it was from the beginning the "father" that didnt go with it.
In the end for Ain and his mother the inheritance is useless anyway, since they can go back to be part of the royal family of a muuuch more powerful nation, which is better in all ways, the reason why the whole thing is so bad is because it was a diplomatic thing, it was sort of a treaty with a much more powerful nation... in that way the "father" took his liking of another woman over the safety of his people, breaking of something like that could have very well resulted in war (no matter what the first king swore way back) and his country would have been utterly crashed.
So, he is just a dumb ass for that, ignoring his son and first wife like that, openly disrespecting them, even though he know they are much more powerful than him in the end. He could have brought ruin to his whole country with this behaviour, just because he was incapable of respect (after all, ains mother arranged herself with another wife and son, so its not like he couldnt have his love, but he just had to be an disrespecting ass to the two most important individuals in his realm...)
