It's a really cliche moral, but still a good one. "You only fear what you don't understand." Really does apply to a lot of things in life, but it leads many people to become either ignorant or unreasonable.
Boom senpai kinda didn't get it when jimbei asked if koala was scared of them. Just because you're hit by one fishman, which hachi told to stop, doesn't mean they are all the same
Marine actually is good, but they are on the wrong side of justice. I.m.o the greatest role is Revolutionary army who helped even civilian and fighting in the right way
