Koji Shindo (新藤 浩二, Shindō Kōji) is a minor antagonist in Yakuza/Yakuza Kiwami and a secondary antagonist in Yakuza 2/Yakuza Kiwami 2. He is the former captain and second patriarch of the Nishikiyama Family.
In Yakuza and Yakuza Kiwami, Shindo has a slicked-back hazel hair and wears a pale gray suit over white shirt, with matching pale gray dress pants and black dress shoes. In Yakuza 2 and Yakuza Kiwami 2, his attire is slightly altered: his suit and shirt color combination is now white/black, similar to his former patriarch's attire, and his haircut is changed into a classic slicked-back undercut.
Shindo's blind ambition took the most out of him, to a point where he's willing to sell the Tojo Clan out to Omi Alliance's Sengoku Family, in an effort to become the clan's next chairman. Despite this, the first game (and its remake) shows that Shindo once held a degree of respect for Kiryu, calling him by his former position as a Lieutenant of the Dojima Family.
In the decade following the formation of the Nishikiyama Family in 1995, Shindo became patriarch Akira Nishikiyama's right-hand man. After Nishikiyama's death at the end of Yakuza/Yakuza Kiwami, Shindo took over as patriarch. Shindo held Kiryu responsible for the death of his former patriarch, and grew a resentment towards him as a result.
Yakuza/Yakuza Kiwami: 1995-2005
Shindo serves as the captain of the Nishikiyama Family. He is first seen when Akira Nishikiyama shoots two of his own men dead for killing someone who appeared to be Mizuki Sawamura. Later he is seen again with Akira Nishikiyama planning the ambush of Kazuma Kiryu at Serena. He then fights Kiryu at the Serena Backlot with a katana, and is defeated.
Yakuza 2/Yakuza Kiwami 2: 2006
Shindo's resentment towards Kiryu results in him disobeying acting Tojo Clan chairwoman Yayoi Dojima's orders to aid Kiryu against the Go-Ryu Clan and the Jingweon Mafia. Shindo has a crush on Yayoi and harbors a great ambition to be the next chairman of the clan following fifth chairman Yukio Terada's supposed death. These desires lead him into selling out the Tojo Clan to the Sengoku Family.
After Shindo's ambitions and betrayal come to light, Kiryu fights him in a brawl in the Tojo Clan headquarters. After being supposedly defeated, he tries to sneak-attack Kiryu from behind in the meeting room, but is soundly beaten after a second fight. When Yayoi expels him from the Tojo Clan, Shindo reaches for a gun, but Daigo Dojima outdraws him, shooting him dead.
Shindo is skilled in using a katana, relying on speed and technique to quickly cut down his foes.
His fighting style in Yakuza Kiwami shares similarities with Nishikiyama's counterpart in Ryu ga Gotoku Ishin!, Okada Izo. In Yakuza Kiwami 2, it resembles that of Goh Hamazaki's counterpart in Ryu ga Gotoku Ishin, Ito Kashitaro.