Seiko Hui Guo Rou (セイコ=ホイコーロ, Sēko Hoikōro) is the Sixth Queen of the Kakin Empire and sixth wife of Nasubi Hui Guo Rou. She gave him twin daughters, Kacho and Fugetsu Hui Guo Rou.[1]


Seiko is a middle-aged woman with short, fair hair that curls sideways.[2]


Seiko categorically refused to answer every single question when interrogated on the allegation that she is plotting an assassination on both Woble and Barrigen, scowling at the detectives.[2] She reveals a much more mellow side when talking to her daughter Kacho, bursting into tears when the latter claims that the succession contest is not something to be feared, but to be fought with honor.[3] She enthusiastically expressed awe for Melody's musical skills.[4]


Succession Contest arc

Seiko refuses to answer any questions from an investigator dispatched by the Supreme Magistrate of the Black Whale regarding the alleged claims sent by Sakata that she's been an accomplice to Barrigen's murder and is plotting to assassinate Prince Woble. She remains on her stance even after the investigator explains there shouldn't be any court records arising from their conversation, preferring instead to endure the three days of monitoring.[2]

A few days later, her daughter Kacho suggests they organize a music show as the hosts of the next banquet. The queen approves and resolves to ask for King Nasubi's permission. Before they part, Kacho shares some hopeful words which move her mother.[3]

Queen Seiko listens to Melody's interpretation of Hyle's Requiem

On Wednesday, Seiko welcomes back her daughter Fugetsu when the latter is taken back to her room. She then returns to Room 1010, where she and the detective listen to Melody's interpretation of Hyle's Requiem. She showers the Hunter in praise and excitedly promises to take care of broadcasting whatever she will play at the banquet on Sunday.[4]

Seiko's Royal Guards

     Active/Alive     Deceased     Former/Arrested

 Royalty  Informants  Support 

Royal Family
6th Queen
Queen Seiko's Royal Guards
→10P →10P →11P →11P →12P
Seiko's Royal Guard 1 SC Portrait.png
Seiko's Royal Guard 2 SC Portrait.png
→13P →14P*
Unseen Character Portrait.png
Seiko's Royal Guard 3 SC Portrait.png
Legend of Symbols
Symbol Meaning Example Meaning
P prince 1P The 1st Prince.
Q queen 5Q The 5th Queen.
... sent by 1Q→ X is sent by the 1st Queen.
... sent to →14P X is sent to the 14th Prince.
...... reassigned to 2Q→14P X is reassigned by the 2nd Queen to the 14th Prince.
...... was assigned to one or more princes →8P→11P X was assigned to the 8th and 11th Princes.
in charge of a prince's curse 4P♰ The guard is in charge of the 4th Prince's curse.
formerly in charge of a prince's curse 12P♰ The guard is formerly in charge of the 12th Prince's curse.
* Information found in Togashi's notes from "Jump Ryu! Vol. 21" interview 1Q*→ The guard's affiliation is revealed in the notes.
Servant* The employee's position is revealed in the notes.
[name]* The employee's name is revealed in the notes.
? Placeholder
(might hold another position)
Captain? The employee might not be the captain or a personal guard.
? The employee might not be a personal guard.
2Q? The employee might have been sent by another queen.
(might have initially belonged to either Prince Momoze or Prince Marayam)
This particular issue arose when their mother Queen Sevanti sent all of Momoze's Hunters and servants to Marayam. Since we only got to see 4/5 of Momoze's Hunters and 2/3 of her servants by that time, we can't say for certain which prince the marked characters initially belonged to.


  • Every queen of Kakin has a numerical theme in their names corresponding to the order in which they married. "Sei" means "six" in Italian.

Translations around the World

Language Name
France Flag.png French Seiko Hoicoro
South Korea Flag.png Korean 세이코 호이코오로 (Seiko Hoikolo)
Spain Flag.png Spanish Seico Hoicoro


  1. Hunter × Hunter - Volume 33, Chapter 349
  2. 2.0 2.1 2.2 Hunter × Hunter - Volume 36, Chapter 372
  3. 3.0 3.1 Hunter × Hunter - Volume 36, Chapter 377
  4. 4.0 4.1 Hunter × Hunter, Chapter 381


v  d  e
Kakin Royal Family
King Nasubi Hui Guo Rou
Queens UnmaDuazulTang Zhao LiKatronoSwinko-swinkoSeikoSevantiOito
Princes BenjaminCamillaZhang LeiTserriednichTubeppaTysonLuzurusSalé-saléHalkenburgKachoFugetsuMomozeMarayamWoble
Ancestors Kakin's First King
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