Part 1: CharactersAt some point there will probably be spoilers in this post. Ill black bar them, but please be careful if you care about that stuff. That said, I'm not going to black bar info that comes straight from the instruction manual (unless you really want me to).
Kiryu Kazuma: Former Member of the Dojima Family, an affiliate of the Tojo Clan. He is known as "the Dragon of the Dojima Family." He grew up at the Sunflower Orphanage with his best friends, Nishiki and Yumi, but has served ten years in prison, taking the blame foe the crime Nishiki committed. And in 2005, after serving his term, he returned to Kamurocho. --Voiced by Darryl Kurrylo.
Goro Majima: A lieutenant of the Shimano Family, an affiliate of the Tojo Clan and captain of the Majima Family. He is a cutthroat member of the notoriously violent Shimano Family. He is known to have no mercy and a quick temper, winning him the nickname the Madman of the Shimano Family. He is awesome. --Voiced by Mark Hamill.
Akira Nishiki: A member of the Dojima Family, an affiliate of the Tojo Clan. Friend of Kazuma. He grew up at the Sunflower Orphanage, He joined the Dojima family at the same time as Kazuma, yet he's always had an inferiority complex. During the ten years since the incident, Nishiki changed greatly. --Voiced by Michael Rosenbaum
Yumi Sawamura: She grew up at the Sunflower Orphanage like a little sister to Kazuma and Nishiki. After Kazuma and Nishiki joined the Dojima Family, she came to Kamurocho, working as a hostess at Serena. Her life was in order, until one incident shattered it all. --Voiced by Eliza Dushku.
Reina: She runs Serena, a bar located on the second floor of a building on a busy street. She has known both Kazuma and Nishiki for ten years, and is also good friends with Yumi, whom she employs. Due to the incident, several of her friends have disappeared from her life. Even after ten years, she still awaits their return. --Voiced by Rachael Leigh Cook.
Make Date: Homicide Division detective. --Voiced by Bill Farmer.
Shintaro Fuma: A Lieutenant of the Dojima Family, an affiliate of the Tojo Clan, and the captain of the Fuma Family. He has been providing financial support for the Sunflower Orphanage, and is like a godfather to Kazuma and Nishiki. He also led the two into the world of the Yakuza. A stern and honorable person, he is trusted and followed by many. --Voiced by Roger L. Jackson.
Masa Sera: The third chairman of the Tojo Clan. Known as a phenomenon for reaching the rank of chairman while just in his 40's. An intelligent man, he also has many young followers. After the murder of Sohei Dojima, he has rebuilt the almost-shatteres organization, and is still in power after ten years. --Voiced by Alan Dale.
Shinji Tanaka: A member of the Dojima Family, an affiliate of the Tojo Clan. He entered this world out of admiration toward the Dragon of the Dojima Family, becoming the faithful "younger brother" of Kazuma. --Voiced by Daniel Capellaro.
Kazuki: The young owner of "Stardust," the most popular host club in town. He is indebted to Fuma, and will be more than happy to help Kazuma out.
Yuya: A host at Stardust, and right-hand man to Kazuki. He considers Kazuki his master, and is more than willing to lay his life on the line for the club.
I'm not sure how up to date I will keep these, but at the very least it will have the basics from the manual.