Hakoniwa Academy (箱庭学園, Hakoniwa Gakuen) is the main setting for the series Medaka Box.


See also: Flask Plan

Before it was called Hakoniwa Academy, the school was known as "Kurobako Cram School" (黒箱塾, Kurobako Juku).


The academy faculty are rarely seen; only a few members have been given any attention in the series.

Locations of Note

Clock Tower Ghost Babel
Clock Tower (時計台, Tokeidai) Ghost Babel (軍艦塔, Gōsuto Baberu)
The school clock tower, thirteen stories tall. The old school building, current classroom of Class -13.
Viper's Den Botanical Garden
Viper's Den (毒蛇の巣窟, Dokuhebi no Soukutsu) Botanical Garden "Sunlight" (木漏れ日, Komorebi)
A pit dug on the school grounds, it serves as the location of the first match of the Student Council battle. The Botanical Garden "Sunlight", it serves as the location of the third match of the Student Council battle.
Canteen Freezer Unfinished Building
Canteen Freezer Under Construction Building
A freezer in the school canteen, it serves as the location of the second match of the Student Council battle. An under construction building, it serves as the location of the fourth match of the Student Council battle.

Student Categorization

The students of Hakoniwa Academy were originally categorized into three types or Mentalities (メンタル, Mentaru), but there are more categories as follows:


A Normal (通常, Nōmaru) is a regular student who lacks any special ability.


A Special (特例, Supesharu) is allowed to enroll because of their ability to excel in a specific area. They comprise the majority of the academy's scholarship students.


See also: Abnormality

An Abnormal (異常, Abunōmaru) possesses such overwhelming capabilities that the individual is unable to control that aspect of themselves and inherently seeks to master their Abnormality. Their abilities often cause people of lesser ability to unconsciously fear and avoid them. Because of this, Abnormals tend to be lonely and strive to master their abilities. Abnormalities are often innate abilities, but are not necessarily present from birth, as it often takes a few years for an Abnormality to make itself evident. The most extraordinary of the scholarship students, they are enrolled exclusively in Class 13, and are not required to attend school.


Minus (過負荷, Mainasu) are a subcategory of Abnormals, students who have no inherent interest in controlling their Abnormalities and have no sense of morality. Their very abilities are obtained through further deterioration of their minds from hardship and trauma. Unlike other Abnormals, their abilities cannot be researched or analyzed. Rather, they thrive on destruction, regarding themselves as unworthy, unable to relate to others, and have no sense of responsibility. The majority of them are transfer students, invited to the academy to join Class -13 after the Thirteen Party are defeated.

Not Equal

Not Equal (悪平等, Notto Ikōru) is a mysterious and little-known category that transcends both Abnormals and Minuses alike. The only "true" Not Equals are Najimi Ajimu and Hanten Shiranui; Ajimu seems to posses the ability to create proxies that also serve as Not Equals. Ajimu has stated that she is 700 million people, or one tenth of the world's population. These proxies need not necessarily be skill holders; of the Not Equals shown to be a part of Ajimu, the Candidate Student Council have no abilities, while Aoki Aka uses a skill she obtained directly from Ajimu. Setting them apart from Abnormals and Minuses, the Not Equals each have a very unique skill set. Ajimu claims to possess a total of 12,858,051,967,633,865 skills, consisting of both Abnormalities and Minuses. Hanten possesses a skill that allows him to create new skills, and produce as many copies as he wants. Because of their overwhelming abilities, the Not Equals have neither a superiority complex like the Abnormals, nor an inferiority complex like the Minuses. Instead, they do not see themselves as human at all, and as such label themselves as "Non-Humans".


Zero (持たざる者, Zero) is a new category created by the efforts of the True Flask Plan. A complete diversion from the conventional characterizing structure, a Zero is separate from both Pluses and Minuses, but as a trade-off, fate and destiny has no hold or effect over them. Currently Zenkichi Hitoyoshi is the only known Zero, due to his mentality reflected by his personal skill, Devil Style, and the skill's power itself.


See also: List of Hakoniwa Students

Hakoniwa Academy's student body is divided into three years: freshmen, juniors, and seniors. Each of those is then divided into thirteen classes. Classes 1 through 4 are standard classes. Classes 5, 7, and 9 are physical education classes. Classes 6 and 8 are arts classes. Class 10 is the special standard class, Class 11 is the special physical education class, and Class 12 is the special arts class. Normals are placed in the first nine classes, Specials are placed in classes 10 through 12, and Class 13 is reserved exclusively for Abnormals. Recently, a new class has been added, labeled as Class -13, which is reserved for Minuses, the majority of whom are transfer students.


The board of Hakoniwa Academy is passionate about education, and therefore gives out many scholarships. One in every ten students at the Academy has a scholarship. Tuition fees are waved, and students are given every possibility to advance their skills with ease. Scholarships are given to students that are categorized as either Special or Abnormal.


The men's uniform of Hakoniwa Academy consists of a white jacket with blue and gold trim, along with white pants and a red tie underneath the jacket. The girl's uniform of is very similar, consisting of a white jacket with blue and gold trim, along with a blue skirt and a red tie on top of the jacket. The uniform also includes a jersey for cold weather.


Hakoniwa Academy puts a heavy emphasis on student independence. Therefore, the majority of the academy's organizations are student run. Below is a list of all the committees that have been mentioned in the series so far.

  • Beautification Committee (美化委員会, Bika Iinkai)
  • Diet Education Committee (栄養委員会, Eiyō Iinkai)
  • Election Management Committee (選挙管理委員会, Senkyo Kanri Iinkai)
  • Exercise Committee (育てる委員会, Sodateru Iinkai)
  • Health Preservation Committee (保全委員会健康, Hozen Iinkai Kenkō)
  • Library Committee (読書委員会, Dokusho Iinkai)
  • Public Morals Committee (风纪委员会, Fuuki Iinkai)
  • Student Council (生徒会, Seitokai)


The board of Hakoniwa Academy is known for approving of multiple student clubs and organizations. Below is a list of all the clubs that have been mentioned in the series so far.


  • When translated from kanji, Hakoniwa (箱庭) means Sandbox.