The following character is a canon character.
Please refrain from adding fanon infomation (Eg. Fan-Made Personality, Fan-Made backstory, Fanon Relationships, ETC).


Oka Ruto
Oka Armband
Student Info
Career Student

Club Leader

Reputation Unknown
Club Occult
Age 18
Persona Coward
Crush Taro Yamada
Additional Info Founder and President of the Occult Club.

Seems to have absolutely no interest in anything that is not paranormal.

Stalks the Basu sisters daily in a futile search for evidence that they are supernatural beings.

Oka Ruto is the fourth rival of Yandere Simulator and is the president of the Occult Club.


"Oka is the president of the school's occult club. She is completely convinced that ghosts, demons, and black magic really exist, and wants to dedicate her life to proving that these things are real.

Oka is absent for school during the first three weeks of gameplay for mysterious reasons. As soon as she returns to school, she is immediately smitten by Senpai. Due to the fact that she falls for him in an extremely short span of time, she believes that there must be something supernatural about him, and begins studying him intently.

She is an awkward girl who is regarded as "creepy" by the majority of the school, but she is actually quite harmless, and some people even find her to be endearing. Perhaps Senpai will think that there is something charming about her unusual nature..."


Yandere Dev's explanation of Oka


Oka has messy dark blue hair. Her eyes are light purple. There is a shadow on the top half of her face. She wears the default uniform, unless customized, with spider web stockings and arm warmers along with black panties, and a spider choker.


Oka is a Coward. If a camera is pointed at her, she will hide her face. If she witnesses murder, she will beg the player to spare her in exchange for her silence. If she is spared, she will run home, but will not call the police.


Taro Yamada

She has a crush on him.


Yandere-chan and Oka are rivals in the game.

Sakyu Basu and Inkyu Basu

Oka stalks the two in the morning, as she is certain that the two are of the supernatural kind. However, if they are dead or "missing", she will stand in the Occult Club instead. Though she has no proof, she believes that Sakyu is a succubus, and Inkyu is a vampire.


In the future, the player will be able to matchmake Oka with her suitor.


  • Her name is a pun on the Japanese word for occult, referencing that she is the leader of the Occult Club.
  • Oka is described by YandereDev as a mix between the Hex Maniac from Pokémon X & Y, Tharja from Fire Emblem: Awakening, and Tomoko Kuroki from WataMote.
  • YandereDev finds Oka's appearance to be cute.


Oka Ruto/Gallery