HELP! The assasin is trapped in the body of the prince's fiance!

I was once the infamous Scarlet Assassin, a soul shifter feared across the empire. Now? I'm trapped in the body of Violet, the Crown Prince’s delicate fiancée. If anyone in the palace discovers I switched souls, I’ll be executed for forbidden magic. So while pretending to be a proper noble lady, I must secretly search for a way to reclaim my former power. Unfortunately, there’s one major problem. Prince Zaden. The Crown Prince’s younger brother. The mysterious prince rumored to prefer the company of men. Zaden’s magic gate was sealed by the king at birth, leaving him unable to use magic. Desperate to unlock his power, he discovers the truth about me—the mark of a soul shifter and the lingering presence of the legendary Scarlet Assassin. Now he has a proposal. Open his magic gate. Teach him how to control his power. And in return… he'll protect my secret from the entire palace. It should have been a simple deal. But nothing in the imperial palace is ever simple. Rumors begin to spread. Forbidden soul shifters start appearing across the empire. And the political balance of the royal court begins to collapse. Meanwhile, the prince I thought was completely uninterested in women keeps looking at me like I’m his greatest obsession. Now I have two problems. Saving my life… And figuring out why the supposedly gay prince won’t stop flirting with me.