After I Retired, I Opened a Potion Store

"I am a time traveler. This is my first time traveling to a different world. I am very confused." "But I know that another world has welcomed their king." "In the past few years, I have been a brave man, a dragon knight, a mentor of elves... And I have received countless honors!" "Finally, I got tired and decided to settle down in the royal capital, open a potion shop and enjoy my retirement life." "So, I am definitely not a human trafficker!!!" "Well, after all these years, your brain is still not very good."