Japanese トゥエンティ
Romanji Tuenti
Alter Ego Kai Nijuuri (二十里 海 Nijuuri Kai)
Age 22
Gender Male
Birthday July 7
Height 174cm
Weight 57kg
Bloodtype B
Background Info
Eponym The Fiend with Twenty Faces
Occupation Teacher
Group(s) Gentlemen Thieves; Three Cards
Toy Disguise
Media Portrayals
First Appearance' Moving into the Attic
Voice Actor Daisuke Kishio
Twenty is one of the Three Cards, loyal servants of Lady Arsene of the Phantom Thief Empire and the main antagonists of Tantei Opera Milky Holmes. In the Holmes Detective Academy, he infiltrates the campus under the guise as Kai Nijuuri, one of the teachers.


A slim and handsome man but a narcissist through and through. He loves himself so much that he even carries around a bolster with of picture of himself stamped on it and snuggles with it whenever he is down. Of the three, he is maybe the only and most perverted one of the three who always erect his nipples to hilarious lengths. It functions neither for offensive (maybe for some people) or defensive but just for comedy relief as his nipples tend to erect whenever he is excited.

In the Holmes Detective Academy, he goes undercover as one of the school's faculty. Though not exactly flirting, Twenty's excessive demands for all the students' attention with stripping constantly to have their eyes on him often results in them zoning him sometimes not even listening to his lessons. During the night however, he is the dandy Gentlemen Thief, the left slight of hand of Lady Arsene.

Powers and AbilitiesEdit

Twenty's Toy is the ability to allows him to disguise himself perfectly to infiltrate any facilities for a heist. But the true testament of his stay in the Gentlemen Thief Empire is his skills as a magician being an expert in handling a great number of tools, cards and flying machines at his disposal.


  • Twenty's recurring habit to strip very often in during heists in front of the Milky Holmes. Along with the erecting nipples, it is a mystery why the girls have not yet pointed out Kai Nijuuri is Twenty.</span>
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