Have you played to update? That would never happen for pretty obvious reasons not just the fact of previous bad blood between them, theres the fact hyosuke says the prince is just a sex object and if he was his kingsguard he would just fuck him and ditch him if he was in danger because its stupid to die for someone els. Then you have what happens at koshiro's village.
Just no, if anything happens with hyosuke it's most likely going to be in the corruption route.
I know that he said all that but I think that due to hyosuke’s dislike of seshiro he might want to get away from his village and he might develop a positive relationship to the mc if it would help him get out of the village. Plus he always wants to be better than Koshiro it would be a perfect opportunity for him to prove that he might be better then Koshiro and with the time he then would spend he might develop an actual loyalty to the mc or a bit more friendly rivalry to Koshiro.
This would need to start before the mc and Koshiro left the village. The currently unavailable options like ‘wait for help’ in seshiro’s house could be an opportunity for hyosuke to try and become closer to being a kingsguard and to prove that he is stronger then Koshiro because what is a better show of strength than saving the king when even the kingsguard couldn’t or he could do it because he notices that seshiro is making a dumb decision.
tl:dr:Hyosuke could end up helping the mc in some currently not available decisions and might develop loyalty or even a friendship to the mc and maybe even get over some of the bad blood with Koshiro.
Sorry for making it so long I kinda got carried away while writing.
It would be unlikely but very interesting.
That's what character and relationship development is about. Just because Hyosuke feels/acts a certain way towards the Prince at that point, doesn't mean it can't change with experience and have a branching route for him.
Hyosuke knows very little about the prince thus far because it wouldn't suit his purpose as the 'bad guy' in the existing Koshiro's route for him to know more and for the prince to lose his own bias. But if given the chance to get to know him (especially if the prince does something self-sacrificing to help Hyosuke, for example), or being forced by circumstance, there's every chance his views could completely change, and the prince as well. Not everything has to be about instantly liking a person (I mean, just look at Ramos' 'slow-burn' styled path). Relationships change - enemies can turn to friends and then to lovers. That's hardly a new idea.
Also, we've already seen that Hyosuke can get along with the prince amicably enough from the bath scene, so it's not like he was an a**hole constantly, he just really hates Koshiro and the prince was used in the existing route as an effective way to get to him. In fact, that bath scene is probably what hooked some people on Hyosuke, and the idea of a Hyosuke x prince option.
All in all, it wouldn't be either unimaginable or unable to be written. The fact that you can't see it happening or don't want it to, doesn't mean it can't happen, and happen well.
EDIT: fixed a misspelled name - it's been a while since I played this game.
