Aki Nijou




Aki Mug 2


二条 秋


Nijō Aki


Female Female

Hair Color

Cerulean (Season 1)
Dark Blue (Maken-Ki! Two)

Eye Color

Light Brown (Season 1)
Purple (Maken-Ki! Two)


Bust: 103 (K cup) / Waist: 58 / Hips: 92

Professional Status

Tenbi Academy
Maken-Ki (Advisor)


School Nurse

Personal Status



Unknown Father
Unknown Mother



Special Abilities

Medical Expertise

Debuts and Voices
Manga Debut

Chapter 1

Anime Debut

Girls are Amazing

Japanese Voice

Hitomi Harada

English Voice

Heather Walker

Aki Nijou (二条 秋, Nijō Aki) is a supporting character of the Maken-Ki! series. She is the school nurse of Tenbi Academy and the staff advisor of the current Student Council Security Committee. Aki was a member of the first Maken-Ki along with her former classmates Minori Rokujou, Tomiko Amado, Gen Tagayashi, and Akaya Kodai.


Aki is a rather tall young woman with bright blue hair (more purplish in the 2nd season and OVA) and light brown eyes. She has a slender, curvy figure and giant K-cup breasts. With her buxom bust and voluptuous body being the best among all the woman in Tenbi, Aki often becomes a fantasy subject among all the male figures in the academy.

Aki nijou

Aki's appearance in Season 1

Her primary and common attire consists of a large white lab coat which she keeps open, since she is the school nurse. Under the lab coat, she wears a pink strapless top which is openly laced down the middle that reveals a lot of her cleavage, along with a very short brown skirt. The aforementioned short skirt does have a tendency to ride up on her whenever she stretches or bends over, in which case she is typically seen wearing green panties.

Matching her slightly naive immodesty, Aki typically wears very revealing clothing. Her typical skirt being extremely short, usually rides up whenever she would stretch or bend over, revealing her panties. One of her swimsuits was a simple sling bikini which was thin enough to reveal her nipples.


Aki Nijou Character Sheet - Maken Ki! Two

In a flashback in Begging Teacher, it is shown that Aki had already developed large breasts by the time she was only 12 years old.


Aki is one of the benevolent, gentle figures and she is very kind with all the students and all the school staff. She is shown to be a very naively immodest person (i.e. a clothing klutz) when situations arise. A running gag of this personality quirk of hers is the fact that she is constantly shown revealing some part of her body - most commonly her panties - unintentionally.

Aki has never had a relationship and is still a virgin even with her veteran figure, and is in no hurry to change that fact, as seen in season 2 episode 5 OVA where she makes Takeru her boyfriend in order to prevent her mother from finding one. She does want a relationship but would like to sort the matter for herself. When Minori Rokujou reveals her virginity to Takeru Ooyama and Kengo Usui, she is mortified, and begs the boys to keep it to themselves. Takeru said she would be a good bride and that he want marry her. After that, she blushed and was really happy to hear that.




Takeru Yamato taking an unconscious Aki (Chapter 86)

True Maken Arc

At the end of Chapter 86, Aki was captured by Takeru Yamato and subsequently brainwashed by him in Chapter 89 in order to serve as a virgin sacrifice to break the seal at Amanohara and release the legendary Maken, Habakiri.


Valhelm - Aki's Maken is a debugger type, allowing her to medically examine people and see exactly what's wrong with them. It focuses on the damage in people's bodies and shows it as black spots, with greater damage causing darker areas. She can also erase short-term memories.



  • Aki has the largest bust out of the entire female cast, which perversely attracts all male student's attention and the female student’s envy around her.
  • Along with Minori Rokujou, Aki was one of Takeru's mentors who trained him to properly unleash his Maken during the summer training camp.
  • When she was a student, Aki admitted that her ideal type would be a silent, older man.
  • Japanese adult actress Airu Oshima has features and measurements that are almost similar to Aki.

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