Are You Kidding Me? I Am the King of the Navy!

In the post-pirate era, in a tavern. The girl with braids asked the white-haired retired man: "Grandpa, what did you do before?" "Navy. People who hunt pirates." "But pirates are fictional in comics." "Then have you ever seen a pirate?" "No." "You're welcome." ... At a young age, the future Navy King Zheng joined the Navy on his first day.