|“||(I never actually thanked her for what she did that day...for crying on my behalf... And...I swore to myself, as soon as I realized we were trapped here... ...that I'd protect her, no matter what happens. This must be a test...to see if I really meant that 'no matter what happens' part!)||”|
—Yoshiki Kishinuma, Corpse Party (CHAPTER 2)
Yoshiki Kishinuma (岸沼 良樹 Kishinuma Yoshiki ) is a character introduced in CORPSE-PARTY. He is a major recurring character in the Corpse Party series, and a survivor of Heavenly Host Elementary School.
During Heavenly Host Elementary School saga, he is a student from Kisaragi Academy Senior High's classroom 2-9.
Yoshiki returns in Corpse Party 2: Dead Patient as a minor character.
In CORPSE-PARTY, his hair is black.
In CORPSE PARTY -Rebuilt-, he is seen wearing a white short-sleeved shirt, as well as a black one under it, along with dark green pants and brown shoes. His eyes are red with a slightly visible hue of dark pink and, as mentioned before, he has short black hair.
From Corpse Party onwards, Yoshiki is a teenage boy of average build and height with gray eyes and short, bleached, somewhat-spiky hair. Yoshiki wears the standard dark gray male Kisaragi Academy gakuran fully unbuttoned. Underneath, he wears the other white shirt (also present in the school dress code), untucked and partly opened, under which is a red shirt. His student ID is pinned to the left of his chest and tucked into the breast pocket of his gakuran. Yoshiki also wears light gray socks underneath blue uwabaki slippers.
In Corpseparty; Musume, he has black hair and glasses.
In Corpse Party: Missing Footage, he is seen wearing a simple black shirt, dark green pants, and brown shoes.
In Corpse Party 2: Dead Patient, his previously bleached hair is now its natural black color, and he wears a white shirt with a black blazer.
In CORPSE-PARTY, Yoshiki is an uncaring, rebellious boy with little to no care of anyone other than Ayumi.
In Corpse Party, giving off the aura of a delinquent, Yoshiki faces difficulty in school due to issues at home. Being disowned by his parents, he rents a cheap apartment and works part-time to support himself. At one point, Yoshiki considers getting himself expelled from Kisaragi Academy, since he could not find a reason to continue attending if he didn't have an interest. However, Ayumi Shinozaki changes Yoshiki's mind on the matter after standing up for him against their P.E. teacher, Mikio Tsubota. Carrying over from his attitude at school, Yoshiki is prone to outbursts of frustration when faced with difficult situations. Though he often means well, his actions can appear cold or even selfish to those around him.
In Corpseparty; Musume, Yoshiki's overall character is perverted, as he has a sexual fetish for Ayumi as seen by the multiple times that he tries to grab Ayumi's posterior. In addition, he is unkind and uncaring to any of the other characters, as mentioned when he returns to Heavenly Host solely for Ayumi and mentions that he doesn't really care what happens to the other characters.
Yoshiki first met Ayumi after she stopped him from punching Mikio Tsubota, thus sparing him from being expelled. Since then, Yoshiki has grown strong romantic feelings for her, seeing her as the only person at school who cares about him. Ayumi herself is completely oblivious to this and still seems to see him as a delinquent.
Upon arriving in Heavenly Host, Yoshiki vows to protect Ayumi no matter what happens, a promise that he manages to keep. By the end of Blood Drive, Ayumi appears to return his feelings to some degree.
Yoshiki and Satoshi appear to have a close friendship, shown by the two of them calling each other by their first names. While Yoshiki seems to be slightly jealous of Satoshi due to Ayumi's affection for him, he doesn't let this get in the way of their friendship. They also are shown to spend time with each other at school doing different events from the different activities at the Cultural Festival to having lunch on the roof. Satoshi also shows concern for Yoshiki when he disappears to Heavenly Host going after Ayumi.
While the rest of his family has disowned Yoshiki, his younger sister Miki still cares for him and visits him often. She often cooks for him and sends him tea, and can tell when Yoshiki has been skipping his meals. When Yoshiki is about to return to Heavenly Host, he wishes he could see her one more time before he goes back into danger.
Yoshiki and Mayu seem to be good friends. In Book of Shadows, Yoshiki and Mayu support each other throughout Episode #2; 『Demise』and if you choose so that Yoshiki doesn't go back with Ayumi to Heavenly Host, Yoshiki will hallucinate 2 of his classmates, one being Satoshi, and Mayu, who greets and teases him for coming late to class.
- In the Corpse Party: Book of Shadows Character Contest, Yoshiki ranked 3rd place with 57 votes.
- Yoshiki is a weak swimmer.