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Aoki (青木) is the fourth butler and financial manager of the Yotsuba Family. [1]

Appearance and Personality

Aoki is described as a shrewd and capable gentleman in the prime of his years, depicted as someone who looks more like a lawyer than a butler, all the while being a middle-aged man. [1][2]


As the financial manager, he is responsible for overseeing all of the assets related to the Yotsuba Family. [3] He has for over 10 years dealt with the underground economy and has guarded the Yotsuba treasury. [2]


  1. 1.0 1.1 Volume 3, Chapter 2
  2. 2.0 2.1 Volume 11, Chapter 16
  3. Volume 11, Chapter 15