After Dressing up as a Demon King, I Was Stalked by the Male Protagonist

I Recommend the Immortal Lord Imprisoning the Demon Lord. I Have Seen Many Examples of the Demon Lord Imprisoning the Immortal Lord.

The Male Protagonist Belongs to the Demon Lord

Dear book lovers, are there any high-scoring fantasy romance novels in which the male protagonist is a demon king and is a bit sadistic? There has been a shortage of books recently