As someone who writes books, I'd normally use quotation marks, and the person is obviously talking, so the first one should be correct.
Dear beloved brother,
I strongly advise you to reconsider leaving school to start a business, i suggest you get a degree before starting a business. Because you may run into problems that you (at your current intelligence level) may not be able to fix, and unless you have business strong partners, you’ll never succeed in your goal. So please, adhed my advice, and continue your school studies.
Yours lovingly, Big sister
(I hope this helps you ♥︎)
Answer:
I would recommend Hades, Greek aides ("The Unseen"), also called Pluto or Pluton ("The wealthy one" or "The giver of wealth"), in ancient Greek religion, god of the underworld Hades was a son of Titans Cronus and Rhea the brother of deities Zeus, Poseidon, Demeter, Hera, and Hestia. He is one of the most powerful greek gods along with his brothers