This page only lists Seiko's appearance in Corpse Party D2 series, for her other appearances go here.
Here she is! We were just talking about you Naomi~

—Seiko Shinohara, Corpse Party D2: Fatal Operation

Seiko Shinohara

Seiko Profile D2

Seiko FatalOperation


篠原 世以子
(しのはら せいこ)


Shinohara Seiko


22 years old



Birth Date

December 22 Capricorn Button





Seiko Shinohara (篠原 世以子 Shinohara Seiko?) is a hairdresser, previously a student from Kisaragi Academy Senior High's Classroom 2-9.


Seiko is now an adult. In Depths of Despair she wears a red dress with a black jacket over it. In Fatal Operation she wears a green blouse with blue vest and skirt along with a brown jacket. In both of these games her hair has been dyed green, though she retains her hair curls.


Seiko has been Naomi’s best friend since they were young. She can sense that Naomi needs support after the events that took place in Heavenly Host, even if Naomi is unwilling to admit it. While a bit silly, she doesn’t seem to be as perverted as she acted during high school.


Corse Party D2: Depths of Despair

Spoiler Warning!: Spoilers for Corpse Party D2: Depths of Despair follow


Seiko arrives to the class reunion that Yui set up in classroom 2-9 at Kisaragi Academy along with the others. While she notices that Ayumi seems to be feeling down, Naomi tells her to socialize with the others to speak with Ayumi in private. After Yui suggests telling ghost stories, Seiko gets excited and teases Ayumi for not being interested.

Chapter 3

Seiko makes a cameo in the Mended Soul ending, where she tells a ghost story involving a "wet bread monster" and Miyu Shinohara.

Corse Party D2: Fatal Operation

Spoiler Warning!: Spoilers for Corpse Party D2: Fatal Operation follow

Chapter 1

Seiko comes to Divine Blessings Hospital to meet Naomi since she works in there, but is stopped by the staff. She writes a text message to Naomi saying to let her in. While waiting for Naomi she meets Kensuke Kurosaki who is looking for his friend that is a patient here, Yuuya Kizami. Naomi comes and they chat, after that Kensuke leaves.

While Seiko and Naomi are both inside the nurses office, an earthquake began and they both pass out. They wake up to find the hospital abandoned and looking different. They find out that the are now stuck in a different dimension. They both set out to look for an exit and on their journey find out that people were sent here before them and the dead ones rise up as zombies. Inside one of the offices they read a newspaper clipping and Naomi snaps, yelling at Seiko, which makes her sad, so she leaves her alone.

Chapter 3

30 minutes before Naho, Naomi, Haruna, and Seiko enter the basement of Divine Blessing Hospital, Seiko encounters Yuuya, who was stuck climbing out of a pit. He joins her and they both find a rusty key held by a headless corpse. The key unlocks an operation room, where Seiko is attacked by her zombified mother. After Yuuya cuts the reanimated corpse off of Seiko, he reveals his intention to kill her. Seiko flees out of the room and escapes from Yuuya, finding the key to Machi's room with the help of a spirit. She then hurries towards Machi's room, where she is suddenly attacked by Machi's ghost. She then dashes towards the same pit Yuuya was hanging on to earlier in a failed attempt to escape Yuuya and Machi. She slips and falls into the pit in shock when Machi appears behind her.

Chapter 4

Seiko's appearance in this chapter will depend on the player's choices in the first part of the chapter:

If the player decides to skip looking for information, Seiko is knocked unconscious by the fall and Machi claims her body. At the end of the game, Seiko is shown wearing a patient outfit similar to the one worn by Machi. Because her spirit was left behind at Divine Blessing Hospital, she talks with sudden breaks in her words. Seiko's spirit appears before Naomi after locking her in the nurse office in the real world. Saying that they will be together forever, she crushes Naomi for not realizing that Machi had possessed Seiko's body.

If the player decided to discover the truth about Machi, Seiko will survive the fall and will learn the truth about her mother from Machi. She pities Machi and tries to offer her help in leaving the hospital, which angers Machi. Machi tries to kill Seiko instead but is stopped by the spirit of Sayaka - Seiko's mother. Seiko runs out of the room and bumps into Naomi and the others. They all proceed to appease Doctor Fuyu Hirata and escape from the hospital. In the epilogue Seiko asks out Naomi for a date and Naomi accepts.

Significant plot details end here.


Corpse Party D2: Depths of Despair
Corpse Party D2: Fatal Operation
Characters in Corpse Party D2
Depths of Despair Ayumi ShinozakiJun AraiMayu SuzumotoNaomi NakashimaSachiko Shinozaki
Sakutaro MorishigeSatoshi MochidaSeiko ShinoharaTsukasa Mikuni
Yoshiki KishinumaYui ShishidoYuka Mochida
Fatal Operation Fuyu HirataHaruna KizamiKensuke KurosakiMachi HirataNaho Saenoki
Naomi NakashimaSeiko ShinoharaYuuya Kizami
Zero Hope Kaori HasegawaMisaki AsaharaRyoto TayamaTsukiko WakahisaYukio Iwakura
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