The Monkey Family has four children:
The eldest brother is levelheaded, refined, modest, and courteous. Following the wishes of his elders, he joins the Marines and puts on glasses, working hard to rise through the ranks while secretly plotting to take over the Marines.
I can't stand this. I'm not leaving. I'll take it over and reshape it my way.
The eldest sister has a bad temper and can't pretend to be all sweet and agreeable. She doesn't last long in the Marines, either. She doesn't like rebellion; she likes money. So she pivots to maritime trade, and after building a commercial empire, she has every high-ranking Marine in her debt for funding.
The third child is a sweet, naive fool, but he's born rebellious. The pirates corrupt him from a young age, and he wants to become a pirate. In the end, he sets sail with bumps all over his head.
The youngest is the baby of the family. He follows his third brother around from childhood, inevitably picking up his pirate ways. He and his brother, along with his brother's two sworn brothers, make a pact to form a united pirate crew named after playing cards: Hearts, Spades, Clubs, and Diamonds. Hearts fails before getting started, Spades falls apart halfway through, Clubs never shows up, and Diamonds flies into a rage, turns evil, and decides to hate all pirates. He transforms, charges into Marine Headquarters, joins the Marines, and captures pirates. He's the one who acts most like an elder in the family.
Theme: The kids in my family are all about rebellion!