Baka to Test to Shoukanjuu Wiki
Baka to Test to Shoukanjuu Wiki
Akihisa Yoshii
Kanji 吉井 明久
Romaji Yoshii Akihisa
Aliases Aki
Character Information
Birthdate May 17
Age 17
Gender Male
Blood Type A
Height 5'6" (168cm)
Weight 59kg
Eyes Brown
Hair Ash-chestnut or Ash blond
Status Alive
Family Akira Yoshii (Older Sister)
Unnamed Mother and Father

Mizuki (Girlfriend)

Class Rank Class 2-F
Position Class Ambassador
Punishment Inspector
Suit Modified Gokuran (School Uniform)
Equipment Bokken
Light Novel Debut Volume 1
Anime Debut Episode 1
Manga Debut Volume 1
Game Debut Baka to Test to Shoukanjuu Portable
Seiyuu Hiro Shimono
Voice Actor Josh Grelle
Akihisa Yoshii/Relationships
Akihisa Yoshii/Image Gallery

Akihisa Yoshii (吉井 明久 Yoshii Akihisa) is the titular protagonist of the Baka to Test to Shoukanjuu series and the first-person narrator of the light novels. He is Class 2-F's unwitting Ambassador at Fumizuki Academy.


Akihisa is a very slim young teenager with ash-brown hair. His bangs are particularly prominent, covering part of his forehead, with some smaller strands reaching his eyebrows. He has brown eyes and a small, mildly round nose. He wears the school male uniform of Fumizuki Academy with a small necktie. On special occasions, he wears the black sleeve, hiding the white polo, which he often wears.

In Volume 9.5, after watching the news about getting a new haircut so that the other genders may be attracted to him, he changed his haircut into a shaggy and slightly spiky hair, and the color of it becomes much lighter. Apparently his classmates and Shouko Kirishima changed hairstyles too, as they watched the same news story.


Akihisa is renowned as the Baka of them all, and probably, the biggest idiot in the Academy. In other words, he doesn't think deeper on what his friends are doing for him, such as when he thought that Himeji's love letter was to Yuuji. However, Akihisa is a quite a gentle person, always cheerful and smiling. He cares deeply for his friends, and is always willing to stand up for them no matter the consequences, despite his normally carefree and lazy disposition. Unlike his best friend Yuuji, his carefree laziness doesn't translate into him looking like a "cool guy." Rather, he's genuinely happy without a care in the world (mostly due to his idiocy). However, it is shown throughout the series that Akihisa is aware of his idiocy, and he can put it aside if he applies himself, or if his friends are in danger.

Akihisa also has an honest personality. While at first glance this would seem to be a side-effect of his low intelligence, when given a chance to cheat on a test he quickly turns it down. Of course he's often honest to a fault, like his frequently tactless observations of Minami's physical appearance. Though it seems that when he gets into trouble a lot, his intentions are (for the most part) pure, and it doesn't seem to phase him. He's actually very polite, which is one of the reasons he has so many romantic admirers, but loses his cool when his friends put him directly in line. It really all flies over his head and he continues on with the next day, not because he's a troublemaker, but rather because he rushes into action without thinking about anything but the sake of his friends. Though he tends to slack off a lot, inside he truly is a golden-hearted person.


He entered Fumizuki Gakuen because his parents thought it was cheap. Yoshii's parents live overseas because of work (Akihisa's parents are on long-term overseas work assignments and send money back regularly) and for this reason he lives by himself. With nobody looking after him, he uses up all his money for personal use (like games and anime) and was therefore living in poverty. In this, he often doesn't have money to buy other things.

However, near the end of Volume 4 (Episode 9 in Anime), his older sister, Akira Yoshii, came back to Japan to supervise him until he is old/right enough to be alone again. With this, Akihisa's daily routine was changed, Though Akira's cooking was horrible (and his mother too), Akihisa cooks, he is quite the expert in cooking. His favorite food to make is Paella.

In Volume 9, Akira was packing her clothes, and had to take the flight that day. But due to Akihisa's action of being overjoyed, Akira's bon voyage is delayed, as her packing will be finished in 10 days, so that Akihisa won't miss her, much to his depression. This was not true, however, as she still stayed with him. This results as before, with his "healthy" lifestyle again.


When Akihisa was in elementary school, he met a girl named Mizuki Himeji. Akihisa became a member of the Pet raising Committee where his job was to take care of three white rabbits together with Himeji. He was popular among his classmates.

Original Being[]

Summoned Being wears a modified Gakuran (school uniform) and wields a bokken (wooden sword). The Occult version is "Dullahan (headless knight)", influenced from the feature that 'No head = fool'. As told by the Principal, he is the one that is "distorting the essence of the Test Summon System". Later in the light novel series, Akihisa's summon is upgraded only with a dragon picture on its back. When being tested in Future Summon Being, his summon is the adult version of Akihisa and he admits that he never graduated 2nd grade except by pleading.

After the tournament in volume 2, he acquires the Platinum Bracelet (Also known as the Iron Bracelet or the Prototype Bracelet in the anime), which allows him to summon two Summoned Beings in a battle (each with the average of the original's power). In the anime, the bracelet he acquires only allows him to create a summoning field without the supervision of a teacher. Each depicted bracelet only works with relatively low power levels, as it is defective, and so suits Akihisa and his low grades, as also pertained by Yuuji that only idiots can use it.

Although his Summoned Being's battle level is the lowest, he can comfortably stand up against high-class Summoned Beings thanks to his fluent ability to control it from spending time using his shoukanjuu to do jobs for the teachers, and with the help of the Iron Bracelet that he and his friends use to practice. With this control, his Being's speed is unmatched, it is highly agile and can execute many unorthodox moves.

This has been proven during the fight with Class A, where he takes the belts of the male students speedily and this has enabled him to win battles otherwise thought to be impossible due to his poor grades. However, because he is the Punishment Inspector, any damage that his Being receives also happens to him (e.g., if his Shoukanjuu is punched in the face, Akihisa will feel that punch on his face as well), the fatigue and damage experienced by his Summoned Being is returned to himself, so he tries to avoid summoning during battles if not necessary.

Upgraded being[]

Akihisa's being's only upgrade was a drawing of a tiger on the backside of its cloth, which pissed him off.

Test Run Being[]

During the Summoned Being Test Run, Akihisa's Being was not granted his weapons, and in the place of its usual attire, it wore a Fumizuki Academy school uniform. Like other Beings affected by the Test Run, it told the secrets of its master, but it turned out to be just as stupid as Akihisa when it came to certain situations.

Future Teller Test Run Being[]

During the Future Teller Test Run, Akihisa's being becomes an adult version with the same high school suit, indicating that Akihisa will probably not graduate very soon.


Akihisa first happened to have the Punishment Inspector title back when he was in his first year, after he came back to get the confiscated items that originally belonged to him, along with some books to sell. Though, he was busted by Ironman, and in meeting him there, he gave Akihisa that title for him to make up his studies.


  • Akihisa ranked 8th in Best Male Character and 13th in Best Character in the 2009 poll of "Kono Light Novel ga Sugoi!".
  • His given name Akihisa means "everlasting dawn" while his surname Yoshii mean "well of fortune".
  • Akihisa makes his debut in Baka Test Shoukanjuu Portable as one of the default character, together with Yuuji, Hideyoshi and Kouta.
  • Akihisa is exceptional at sports. His tenacity and ability to come through as a team leader/player plays a large role in his success.
  • Akihisa was revealed to be popular among girls in elementary school in a light novel's side story.
  • He is right-handed, but he used to be left-handed.
  • His first kiss was Minami Shimada and vice-versa.


See more in Akihisa Yoshii/Image Gallery.



v · t · e Class 2-F
Homeroom Teacher Shin Fukuhara (Previous) • Souichi Nishimura aka Ironman (Present)
Class Representative Yuuji Sakamoto
Class Ambassador Akihisa Yoshii
Known Members Akihisa YoshiiAkira TanakaFFF InquisitionHideyoshi KinoshitaHiroshi KimishimaIsao ShibazakiKeita MutouKouta TsuchiyaMizuki HimejiMinami ShimadaMorikawaRyou SugawaShinya KudouToudouYokodaYoshimune KondouYuuichirou NishimuraYuuji Sakamoto