Yuko Nishikiyama

Yuko Nishikiyama (, Nishikiyama Yūko) is the late younger sister of Akira Nishikiyama.
== Background ==
Yuko was raised at Shintaro Kazama's Sunflower Orphanage, alongside her brother. She, like her brother, was adoptive siblings with Kazuma Kiryu and Yumi Sawamura. However, she became sickly at a young age and spent much of her time in the hospital. Nishikiyama's character profile in Yakuza 0 (set in 1988) mentions that he has a soft side in caring for and supporting his sickly sister.
===Like a Dragon: Prologue===
Yuko is first introduced as the one to motivate Yumi to open herself up to the rest of the orphans by getting her to play with them. This causes the four orphans to become closer together. At some point, she suffered from an unnamed illness involving her heart, which caused her to become hospitalized. The resulting medical bills for hospitalization and indefinite stay were paid by Kazama and the Dojima Family. Though Nishiki was grateful for their help, this also caused him to feel indebted to the Yakuza, joining them in hopes of continuing to support Yuko's recovery whilst living a lifestyle that would suit him.
=== Ryu Ga Gotoku: Online ===
In 1984, Yuko recieves a bouquet of flowers from Kiryu as a surprise which she displays in her hospital room. This is noticed by Nishikiyama during one of his regular visits. When asked who they are from, Yuko tells him that they are from her boyfriend. Surprised and concerned for his sister, he leaves the room to search for the person responsible. 
Yuko later recieves a phone call from her brother, after he had confronted Kiryu about the bouquet. Yuko apologizes, and tells him that it was all made up, and that she had been reading a romance novel about a girl in hospital like herself, and felt jealous. Relieved, Nishikiyama tells her that if she really does find a man she wants to be with, then to tell him from the start.
===Yakuza/Yakuza Kiwami: 1995-1996===
In 1995, Nishikiyama shoots Sohei Dojima in response to him attempting to sexually assault Yumi. Because Yuko is heavily reliant on her older brother and her final surgery is coming up, Kiryu decides to take the fall for Sohei's murder in the hope that it will allow Nishikiyama to still spend time with her.
In Yakuza Kiwami, exclusive flashback cutscenes flesh out what happened to Yuko. She is unlikely to survive, but Doctor Kiminobu Hiyoshi tells Nishiki that he can try getting a new heart on the black market, but that it will cost him 30 million yen. In what costs Nishikiyama a lot of strife and humiliation, Nishikiyama enlists the help of his abusive and disrespectful lead subordinate Matsushige to get the money. Eventually he gets it all, but once he pays it, Hiyoshi turns out to be a fraud who uses the money to pay off his debts before disappearing.
Shortly thereafter, Yuko dies in 1996. This, combined with the fact that Yumi disappeared after Sohei's death, Nishikiyama's own feelings of inferiority, and the constant damning comparisons made of him to Kiryu by those around him, cause him to descend into darkness. As he sits in front of his shrine to Yuko in his office, he grabs a tanto knife and holds it towards his own stomach about to commit seppuku, before Matsushige interrupts. Nishikiyama finally snaps when Matsushige continues to shame and criticize him, and stabs him to death, thus completing his transformation into a cold-blooded man who aims to become Tojo Clan chairman.
==Gallery==
File:Ykyukionishikiyama.jpg|Yuko's memorial tablet
File:Yuko Nishikiyama's Hospital Room.png|Yuko Nishikiyama's Hospital Room in Early 1980s in Ryu ga gotoku online
Category:Sunflower Orphanage
Category:Like a Dragon: Prologue Characters
Category:Yakuza Characters
Category:Yakuza Kiwami Characters
Category:Ryu Ga Gotoku Online Characters