
To be fair his main priority is actually selfish lol. He wants Raymond to be with his sister so Raymond can be officially connected to his family and strengthen the royal family’s power. He had said it before that it would be beneficial to him if they do get married. Plus added onto the fact that he’s closer to Raymond than his sister. He’s the annoying brother type that only cares about what he wants first, but he genuinely doesn’t wish actual harm to his sister. He truly believes she’s just lying about her feelings since she’s been known to chase Raymond majority of her life.

lol add the fact most brothers in rofans either "likes" their sister's romantically (applies to them being half-siblings) or sees them as enemies or is batshit crazy (psychos). He is MUCH better tbh though selfish. Also, he's a crown prince so.. it'll be win-win for his side if MC and Rayshit end up together.
ya'll talk shit to her brother but I'mma enjoy how blud is giving Raymond a path not knowing how it'll end w/ Raymond falling on a cliff and suffer ♪ヽ(・ˇ∀ˇ・ゞ)