Huh, I read some part of the novel for this and I distantly remember that when his older sis gets the MC to come to the academy/school thing, she's stated to want to do it so that the second prince has someone to take care of him/act as somewhat of a role model. If he's not an ass than they might end up with an actual brotherly bond, won't they? Speaking of that, I gotta wonder what the prince's relationship with the queen is like, especially after the whole collar thing