How Did I Become a Navy Marshal When I Was an Undercover Agent?

Akainu: You are the future star of the navy. The protagonist's heart: I'm not, I really don't, you're talking nonsense! Akainu: I saw you fighting bloody battles on top and almost dying. The protagonist's inner thoughts: He is originally an undercover agent of Blackbeard, and he is clearing obstacles for Blackbeard! Akainu: I hope you will lead the navy to glory and make the sea clean. The protagonist's heart: I just want to be quiet and live in peace. If my undercover identity is exposed, I will be finished and cry! Many years later, when he stood at the top of the world: You think, how could I become a navy marshal just because I was an undercover agent? People around me became happy: Sir, you really know how to joke. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.