Kotetsu Sarumaru
Biographical Information
Kanji 猿丸 小鉄
Rōmaji Sarumaru Kotetsu
Animal in Name Monkey (猿)
Zodiac Sign Virgo
Birthday September 20th
Age 15-16
Physical Statistics
Gender Male
Height 172 cm (5'7¾")
Weight 59 kg (130 lbs)
Blood Type B
Hair Color Dirty blond
Eye Color Amber
Professional Status
Occupation Student
Personal Status
Relatives Mother
Manga day.11

Kotetsu Sarumaru (猿丸 小鉄, Sarumaru Kotetsu) is Suzume's classmate. He is friends with both Mamura and Inukai, the latter of whom he seems to spend a lot of time with.


Sarumaru has an undercut, the hair on top being rather messy and appears to have been dyed dirty blond. He has amber eyes. At times, he also wears earrings.


Sarumaru is known to be an outgoing person and is usually always cheerful. He is often seen eating.



  • His favorite food is ginger-fried pork.
  • He likes to play video games, specifically Monster Hunter, which he often plays together with Kameyoshi after school.
  • He likes to play soccer and is a member of the soccer club.
  • He likes Weekly Shōnen Jump, a weekly magazine of shōnen (young boys') manga.
  • He likes English music, including bands such as August Burns Red or Pantera.
  • He appears to be a fan of Batman, as he is shown in day.11 wearing a t-shirt with the Batman logo on it.
  • He is afraid that his mother will discover the pornographic book he bought at Aon.
  • He has a side story based around himself and Kameyoshi.
  • The animal in Sarumaru's name, monkey (猿), is the "saru" in "Sarumaru."


  • Sarumaru looking up
  • Sarumaru irritated
  • Sarumaru out of breath


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