Oh No, I Possessed a Male Character!

plot

After drunkenly performing a soul-transference spell taught by a close friend, I found myself in a romance novel, not as the main character but as the side character, Muzel.
Intent on returning to reality with my friend, I unexpectedly fell in love with Klaus, the novel’s protagonist.
Resolved to support Klaus as his advisor and shape him into a great emperor, things took a turn.
“Muzel, have you ever kissed?”
“No? Um…”
“I want to be your first.”
Instead of pursuing the heroine, Evanjelin, or the antagonist, Elfriede, Klaus begins to court his advisor, Muzel.
“Will you date me, Muzel?”
Shocked and feeling unworthy, I keep refusing, but he persistently approaches.
His love gradually sways Muzel…