We know that dragon used to be a marine, but he left due to "could not find any justice"
I believe Dragon wants to become fleet admiral, but he was not selected.
The thing is, when you become fleet admiral, you spend lots of time with bureaucracy and sitting on office
That's probably Dragon's dream job (he can keep looking to the East and drinking beer in his office). He then got mad he was not selected and left marine

I believe Dragon wants to become fleet admiral, but he was not selected.
The thing is, when you become fleet admiral, you spend lots of time with bureaucracy and sitting on office

That's probably Dragon's dream job (he can keep looking to the East and drinking beer in his office). He then got mad he was not selected and left marine