Name Nanaya
Kanji 七夜
Romanji Nanaya
Race Shin
Birthday November 29
Age 27
Gender Male
Height 185 cm (6'0)
Weight 75 kg (165 lbs.)
Blood Type AB
Affiliation Homurabi (King)
First Appearance
Manga Debut Volume 2: Chapter 5
Anime Debut Episode 1
Seiyū Hiroyuki Yoshino

Nanaya (七夜, Nanaya) is one of the antagonists of Monochrome Factor, and one of Homurabi´s five children.


Nanaya is a slim, yet tall and fairly muscular man. He has extremely pale skin, gold eyes and short, blue hair. One of his eyes are covered with an eye patch, and beneath the eye patch he has several scars running down his face. He also has various piercings on his ears and two piercings on his left eyebrow. He usually wears a tight, high collar, black tank top underneath a blue parka. He also wears black pants and brown boots.


Nanaya has a sadistic streak when targeting the weak, fighting Akria and torturing Shirogane. He has a temper whenever people comment about his failure or reading through him.


It is suggested that Nanaya is the last child of Homurabi, spoken that he had been a Shin for a few years only. Not much of his history is known.

The first Shin Akira and Shirogane meets as the series progress.


Powers and AbilitiesEdit

  • Weapons- He first wielded uniquely-designed knives, later his true weapon showed to be twin forked Chinese daggers/short-sword.
  • Lightning Manipulation- Only being a Shin for a few years, Nanaya can only control his abilities of using lightning through his weapons. Later on in the manga when supporting the fight against Hiryuu, he showed that his new arm acted as a catalyst for his lightning.
  • Shin- His physical abitlies surpass human and he does not age physically.


"You don't quite understand the situation you're in, do you ?!"


  • Favorite colors are light green and gray while the colors he dislike are monotype and pink.
  • His favorite food are sweet potato ranges and meat and the food he dislikes are smelly food.
  • Books Nanaya likes to read are Army Style Books and Knife Catalogs, books he dislikes are love novels.
  • Music he listens to are Hard Core and Panic, his least favorite music is Ballad and Classics.
  • In the omakes of the manga, Nanaya is deemed shorter than his original height(185cm).