The impression I get is that he DOES want his son to be what he wants to be, so he did that the only way he knew how; by giving him as many opportunities and options to choose from as he could.
Unfortunately, he never actually asked his son what he wants to do because he's an autistic weirdo who...
@U235 That's only if the percentage does correspond to how much energy he has absorbed. It's more likely the percentage is how draconic he has become, and the closer you are to 100% the more energy is required to increase it.
@ghostt The only one he cared about was his master, and he's still running on the assumption that the massacre happened well after his master's natural death.
@Dazdigo When my mum was young and working as a cashier, a wine bottle once broke on the checkout behind her, and the fumes caused her to pass out. Some people really do have terrible alcohol tolerance.
The world building IS the plot. Other stories may have a demon king to fight or a princess to woo, the endgame of this story seems to be to better understand the other species, and I think that's wonderful!