I assume you’ve read my tags and done your search on the matter, but I’ll tell you the same: Sherlock Holmes is a genius, an investigative consultant who solves murder cases, the only one on the job. He has a brother, Mycroft, co-founder of the Diogenes club, the landlady of 221B Baker Street, where Holmes lives, Mrs. Hudson, an assistant, military doctor from Afghanistan, Dr. John Watson, a lover, a thief jewel, Irene Adler, and a nemesis, a professor, unmarried, “His younger brother is a station master in the west of England.” (quote by the writer) Dr. James Moriarty. He lives in London, 19th century. Sherlock Holmes is a fictional character by Arthur Conan Doyle.
Akagi Shigeru, ... , there’s not much to say about him because not much of him is known. He is a fictional character in a manga (japanese comics) by Nobuyuki Fukumoto. He likes to gamble, to risk his life, in a literal way. He is an “outcast”, in his own terms, and he has a few friends, but had never the intention of having wife and children. He has a will of iron. He plays Mahjong, (not solitaire). At the beginning of the manga, he is 13, but he is portrayed in several moments of his life, including his death. Actually, I’m wrong, there’s an other manga on Akagi, “Ten”, obviously by the same author. Later in his life, Akagi becomes a Yakuza boss. On a more personal note, nothing ascertained, proved, it’s forshadowed, hinted, that he lost both his parents at a young age.