Emperor of a nation dies from poison and is reincarnated as a slave For the opposing country. He serves the emperor in bed. The reincarnated emperor impresses people with his skills with he sword and emperor skills but the empress and their kid don’t like him and cause trouble. Now the emperors kid impulsively is taking the reincarnated emperor to the magic tower where he can get a magic stone to escape.
Two Empires, The Slave Of The Empire