Tales of the Ghost King

After I transmigrated to ancient Japan, I thought I'd spend the rest of my life in this backward place. Instead, I became the servant who brewed medicine for the demon boss. Looking at the bowl of medicine in front of me, I fell into deep thought. Then I decided to down it in one gulp! Today, I'll be the Demon King! I'll take on the curse of immortality in his place! [Synopsis written Sunday, June 11, 2023. Screenshot saved as proof.] Theme: As expected, there's nothing to say