Kōichi Yamadera
"Yakuza 4" has three new protagonists in addition to Kazuma Kiryu, the main character since the original "Yakuza" game: Masayoshi Tanimura (Hiroki Narimiya/Toshiki Masuda), Shun Akiyama (Kōichi Yamadera) and Taiga Saejima (Rikiya Koyama). Other new characters include Junji Sugiuchi (Kenichi Endō), a Tokyo Metropolitan Police Department detective; Hiroaki Arai (Ikki Sawamura), a Tojo Clan yakuza; Seishirō Munakata (Kinya Kitaoji), a high-ranking police officer and a woman, Lily (Maju Ozawa). Returning characters are Haruka Sawamura, Goro Majima, Makoto Date, Daigo Dojima and Goh Hamazaki.