Majisuka Gakuen Wiki

"They're all so stupid. I can't believe they're fighting in such large numbers..."
―Nezumi's entrance speech before joining the war against Yabakune[Majisuka Gakuen 2 (src)]

Watanabe Mayu (渡辺麻友, Watanabe Mayu?), also known as Nezumi (ネズミ, Nezumi?), was a primary character of Majisuka Gakuen and main character of Majisuka Gakuen 2. She acted as a tritagonist in both of the series. Her full name was seen in her Student I.D. when she introduced herself to Shibuya. In Cabasuka Gakuen, she temporarily filled-in for Kurage using the genji name Utsubo (ウツボ?).

Appearance and Personality

Nezumi is shown to be quite manipulative and calculating. Her goal through most of both seasons is to dominate Majisuka Gakuen. She often uses people to achieve her goals, such as her only friend Center along with the whole of Yabakune. She has long black hair and wears a typical Majijo uniform. She is always seen sporting a hooded jacket which she keeps her hood up and only puts it down on a few rare instances. Nezumi also wore beige boots, but when they were taken from her she started wearing black ones.

Nezumi is shown to be an expert fighter in Majisuka Gakuen 2, where she defeats Team Under and later on helps Center fight Yabakune. Her specialty seems to be striking an opponent's weak points, such as the back of their knees.


Unlike most of the other students at Majisuka Jyogakuen, Nezumi came from a privileged background. Her father was a wealthy, corrupt politician who never payed attention to her. He would give Nezumi as much money as she wanted, but never showed any true affection to his daughter. She grew to hate her father because of this, believing that he didn't care for her at all.

Nezumi met Center during sometime after they both had entered the school as first year students. When Center was walking by, Nezumi threw a paper airplane which landed at the latter's feet. The plane was made out of an article about a scandal surrounding Nezumi's father. After realizing that they both hated their fathers, Nezumi and Center became allies.

Majisuka Gakuen

Nezumi started "coming out of her hole" when she heard that a strong student appeared in Majijo. She had her chance to see the rumored Maeda Atsuko in her fight against Gakuran, and again by chance against the Sanshou Sisters. Once confirming the rumors, she started stalking her to know her "habits" and started assessing her strength through battles that she "fixed", starting with Choukoku. As Choukoku was staring at the stairs of the Rappapa clubhouse, Nezumi appeared and "introduced" Atsuko to her. After allowing the two of them to meet, Nezumi revealed Atsuko's habitual reaction to anything related to the word "serious". After seeing the walls of Majijo vandalized by posters which declares Atsuko as a murderer, she also began searching for the one behind them as she sees another opportunity to assess her.

Nezumi started making negotiations with the Yabakune Gang President, promising that the one to defeat the pillars of Rappapa is not someone to take interest in the position. Observing the fight of the two lone wolves that she pitted on each other, she was disappointed to see a clean match with a friendly ending.

Nezumi was the one to start the flare of war between Rappapa and Atsuko. As Shibuya was disturbed by the attention and praise gained by the transfer student, she felt that the whole school was making fun of them. Nezumi used Shibuya's anxiousness and revealed a "loophole" in the rules. As Shibuya was not allowed to attack Atsuko, the Queen would not dare do anything in plain sight, therefore if the fight is in a closed-space, the others would not know of it.

Majisuka Gakuen 2

Change of Generation, Come On!

Nezumi watches from the sidelines with the other Majijo Students as Jurina, who is now known as Center climbs the Rappapa Staircase in an attempt to assess the power level of Otabe. Realizing that even Center can't measure Otabe's level by a mere skirmish, she attempted to recruit Rappapa's former underlings.

The Leader of Yabakune Appears!

After evaluating the power level of each ot the New Rappapa members, Nezumi started her operation by bringing together all the gangs of Majisuka Jyogakuen to join forces under her new alliance: the Tsu No Ji Rengou.

With Center by her side, and their alliance in their back, Nezumi started their march against the New Rappapa.

Anticipating their arrival, Team Hormone blocked their path before Amakuchi arrives to help, tuning-up herself into Chuukara to avoid seriously injuring anyone, and then to Gekikara, after Center assured her that it's ok to go all out.

In the middle of the battle, Nezumi was taken by surprise, along the other Tsu No Ji Rengou members, by the arrival of Oshima Yuko's sisters, Yuka and Yuki, who stopped the fight and warned of the new Yabakune threat.

Agreeing to a truce after an exchange of complex analogies with the twins and Otabe, Nezumi retreated, murmuring the word "war" as she leaves.

The Traitor Shows Her Greed

Nezumi asked Center what she'll do if they reach Majijo's top, in which Center replied that anything's fine if it's with her, which took Nezumi by surprise. She headed straight to Yabakune afterwards to observe the fight between Ookabuki and Shibuya, which ended in the Kabuki Sisters' loss. She posted a lot of images of the battle in Majijo's Bulletin Wall, then headed for the Rappapa Clubroom to intensify the anger of anyone she finds there, only for her plan to be thwarted by Otabe. Annoyed, she appeared before Shibuya to propose a plan to flush out Atsuko. She appeared later on a tunnel Team Hormone was using to avoid Yabakune, seeing that Nezumi was being chased by Yabakune, they tried to fight back, only to be beaten-up themselves, a courageous trait Nezumi acknowledges that day. Center, in retaliation, began her own hunting, and fought any Yabakune student she could find to avenge her friend. Nezumi was later seen on her favorite spot beside skipping, revealing that her wounds aren't that deep.

The Expiration Date of Friendship

Nezumi was surprised to hear that Center was really hunting Yabakune in retaliation to what happened to her. When asked by Shibuya, she denied her connection to her instead and assured her that she'll get a rematch with Atsuko soon.

When she returned to Majijo, she tried to convince Center to stop hunting for now and just wait until only one school survives the war.

Overhearing that Gakuran to fight Shibuya went instead of Gekikara, she searched for the queen and inform her of Gakuran's actions.

Gekikara ROCK

Otabe, guessing that it was Nezumi who informed Gekikara of the challenge, confronted the girl at her usual resting spot beside the school pool. Although not sure if she did it to save Gakuran or for some other plans, their talk was interrupted by the arrival of Center.

Meeting Center on their rooftop meeting spot, she admitted that she underestimated Gekikara, she told Center that Yabakune should be stopped.

After Gekikara challenged Shibuya for a one-on-one, Nezumi unwittingly danced, finding out too late that Otabe was there.

{more to be done}

Majisuka Gakuen 4

Nezumi reappeared in Majijo during the battle between Salt and Sakura. She was caught by Minami watching outside the gym from an open window. Nezumi remarked that Sakura was capable, but also pointed out how Salt was like a monster.

Majisuka Gakuen 5

Interested on what happened, Nezumi attended Salt's funeral, but was surprised to see five of the previous Rappapa members (Atsuko, Yuka, Yuki, Kojiharu and Center) aside from Minami.


Majisuka Gakuen Majisuka Gakuen 2


  • Nezumi means mouse, which shows that her character is able to cause a big commotion just by making a few sounds.
  • Her student ID shows that her date of birth is March 26, 1993 (a year earlier than that of the original birth date of her actress, Watanabe Mayu: March 26, 1994) to match the age of the character she portrays.

Nezumi in Saba Doru?

  • Watanabe Mayu portrayed Nezumi once more in the drama Saba Doru doing a chewing gum advertisement in Episodes 6 and 11, and by popular request in the variety show AKBingo! episode 471.
  • The plan for Nezumi's role in season 1 was slightly changed from a temporary ally to the anti-heroine that she was portrayed as [1]. The original plans for Nezumi's character was instead carried over to season 2. Her name in the original script was Nezumi On'na (ネズミ女, lit. "mouse girl"?).
  • Her father was said to be a corrupt politician by the name of Watanabe Tomozou.
  • Nezumi's background theme is August Wilhelmj's arrangement of Bach's Air on the G String.
  • Watanabe Mayu's role as Nezumi was mentioned in one of Mita Mao's scenes in the video game AKB1/149 Renai Sousenkyo.


  1. Majisuka Gakuen Special DVD-BOX (Deluxe Edition)
Majisuka Jyogakuen Emblem.jpg Majisuka Jyogakuen
Maeda Gundan Maeda Atsuko
Onizuka Daruma | Gakuran | Kabuki Sisters (Ookabuki and Kokabuki)
Erena | Choukoku | Shaku
Team Hormone (Wota, Akicha, Bungee, Unagi and Mukuchi)
Erena | Choukoku
Rappapa Nojima Yuriko | Oshima Yuko | Otabe
Maeda Atsuko | Sado
Center | Nezumi
Gekikara | Torigoya | Black | Shibuya
Shaku | Gakuran | Kabuki Sisters (Ookabuki and Kokabuki)
Dance | Choukoku
Oshima Yuka | Oshima Yuki
Rappapa Guards | Team Hormone | Sanshou Sisters | Team Fondue
Golden Eyebrow Society
Tsu No Ji Rengou Center | Nezumi
Team Under | Team Fondue
Golden Eyebrow Society
Faculty Nojima Yuriko
Kiken | Kuuki