Misuzu Ōyama
KNK01Misuzu profile
Gender Female
Race Human
Relatives Toshiro Ōyama (Husband)
Professional Status
Occupation Landlady
Behind The Scenes
First Seen Season 1, Episode 1
Last Seen Season 1, Episode 25

Misuzu Ōyama is the owner of the apartment building that Hei stays at in Tokyo.


Misuzu has grey hair tied up at the back of her head and held with a pin which has a red ball at one end. She has dark eyes.


She is usually seen chasing Mao away from the house. She also likes to compliment Hei for being such a good boy.

Part in the StoryEdit

The Black ContractorEdit

S1E3 Hei, Misuzu Ōyama and Mao

Misuzu with Mao and Hei.

When Hei arrives at their apartment building, Misuzu mistakes him for the repair man and ushers him in to fix the television. Hei is eventually able to explain that he is there about renting an apartment and she shows him to his flat.[1] She frequently chases Mao away from her building as he reports to or summons Hei.[2] She tries to keep the other residents in check with their drinking and partying and applauds Hei for being a diligent student and worker, trying her best to keep the others from dragging him down. When Kenji Sakurai kicks down the door to one of the apartments, she makes him and the other residents fix it before preparing a large dinner for them all. Misuzu comments that because of their multinational origins, she is fluent in seven languages. This prompts Toshiro to spit out the rice he is eating in surprise at her comment.[3]

S1E23 Misuzu Ōyama shocked, Kiko, Gai

Misuzu is shocked at Toshiro's reply.

When Gai Kurusawa and Kiko Kayanuma visit their building in search of answers to a questionaire about the old stars, Gai asks Toshiro about them. Misuzu dismissively says that Toshiro is mute, but he shocks her by speaking at length about a time they watched the stars when their duaghter was still in grade school.[4]

Gemini of the MeteorEdit

Misuzu is present in Shion Pavlichenko's alternate world. While she is outside her building sweeping, Suou Pavlichenko rushes passed her and says hello to her.[5]


  1. The Black Contractor, Episode 1
  2. The Black Contractor, Episode 1
  3. The Black Contractor, Episode 17
  4. The Black Contractor, Episode 23
  5. Gemini of the Meteor, Episode 12

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