Demon King Daimao Wiki
Akuto Sai
Akuto sai3
Name Akuto Sai
Kanji 紗伊 阿九斗
Romaji Sai Akuto
Gender Male
Race Human/Demon
Unusual Features His birthday is 25 December, in which he picked as it was the day he was abandoned at the church
Affiliation Constant Majick Academy
Occupation Student

Demon King

Goal To become a high priest
Status Alive (age 15)
Debut Episode 1
English Voice Chris Patton
Seiyuu Takeshi Kondo

Akuto Sai Pacar Icha Rebut Jofan(紗伊 阿九斗 狗閪 Sai Akuto) is the primary protagonist of the series Demon King Daimao. He is an orphan and a kind man who transfers into Constant Magic Academy, hoping to someday become a high priest for the benefit of society. However, upon arriving, Yatagarasu, the school's oracular spirit, predicts that he will become a Demon King in the future.


Akuto has reached godhood and can never die or be killed

has brown hair and purple eyes. And notable markings below them. Possibly symbolizing his role as "The Demon King," When his personality changes his eyes become red and the marks under his eyes enlongate and become red as well.

Akuto's Demon Eyes

Akuto's eyes red


Akuto as a Child 1

Young Akuto Sai

He was an orphan, abandoned outside a church. During his time living at a church Akuto met a girl and gave her a hair pendant.


Akuto is seen as very kind. Though once he was told he was the demon king. He persistently tries to justify that he isn't a bad person. It's also seen that he treats women with respect, and often doesn't appreciate constant advances. He also doesn't like being called "The Demon King" he can swing his hand and whole verse is gone

At other times, He has been shown to have a very violent personality with some evil overtones to it. But for good reasons. He sometimes gets into strange situations which portray him as a guy who wants to be the demon king.


Akuto Sai first meets Junko Hattori after helping out Junko's grandmother and Junko thinking he was mugging her. Junko and Akuto seemed to bond over their strong senses of justice. Akuto and Junko enter into a pact a friendship that will end in Akuto's death if broken. Akuto seems to really admire Junko and tells her that he hopes he's in her class.

When Akuto arrives at the school he meets his teacher Mitsuko Tori. When he is examined and given his future occupation he is declared the future Demon King. All of the other students seem very threatened by this and avoid Akuto, (except Ms. Tori who continuously bothers Akuto about killing himself and examining his body.) Akuto ends up being put in Junko's class but the class is afraid of Akuto. Akuto ends up in a duel with Junko and even though he tries to avoid fighitng her, his horrible control of mana causes an explosion of energy.

Akuto meets Hiroshi Miwa who starts to call Akuto "big brother." Hiroshi convinces Akuto to climb Junko's window and attempt to apologize but Junko see's this as an attempt to humiliate her and chases after him. Akuto runs into Kena Soga and she promises to protect him from Junko for personal reasons. Akuto's terrible control of mana causes another horrible explosion and his "observer" Korone appears.

Korone brings Akuto to the principal who tells Korone to stay with Akuto so they can be prepared if he actually does become the Demon King.The following day Akuto meets Fujiko Eto, who tells Akuto that she will help him with anything that he needs. Later, Akuto goes to the bathroom and calls Fujiko and asks her to help him make amends with Junko.

Fujiko tells Akuto to meet her in the mountains behind the school, and how to turn off Korone. Akuto runs into a misunderstanding while trying to pull Korone's tail and turn her off, and a demon dog appears. Akuto manages to suck out the demon dogs mana and it turns into a regular dog. The regular dogs starts chasing after Kena who just happened to be following Akuto while wearing a hair pin that turns her invisible. During the commotion Akuto see's Korones tail and manages to pull it, and she turns off.

Fujiko appears and suggests that Akuto join the disciplinary committee. Fujiko also gives Akuto a gun and some pills that she says will help Akuto and Junko understand each other. Kena; whom is still running from the dog, naked, runs into Akuto right as he turns Korone back on. Korone, thinking Akuto has raped Kena threatens to turn him into the school and police, but he convinces Kena to tell her that it was her fault.

Akuto found out about the school's underground after Hiroshi tells him in the school's bathouse, and mentions how Junko Hattori fought down there to gain her popularity. After Hiroshi leaves, Korone asks him a kind of stupid question about sex. Fujiko Eto helps him get an arrangement to meet with Hattori in the underground. When he arrives at the rendezvous point, he is ambushed by a group of thugs who he quickly injures by crushing their bones. When he pins their leader against the wall with his own chain, Hattori arrives, and well, she is convinced he is "betraying her" and when Kena intervenes later, they somehow end up friends again.

Akuto decides that learning to control his power is manditory, and so, agrees to go into the isolation cell, only to be followed by Kena and Korone, when they lock in, Eto appears with intent to cause him to be under her complete control to do with as she pleases. In the chamber, they find a map, which Eto gets distracted by and runs off with. Kena photocopies these and posts them everywhere, when students come back injured, Akuto decides to go in and look for the "treasure", Hattori not much further behind.

A strange girl named Eiko Teruya follows them and causes problems. Akuto finds out that the labyrinth was once a treasure only the demon king could control and the tasks were set up by the council. Eto takes the key they found and awakens the Dragon Peterhausen, who takes Akuto on, and loses. He swears to live under his command, and a picture is taken of the main characters and Peterhausen.

Akuto goes the beach school and he notices Korone is acting strange, as see is constantly tring to seduce him.


ScreenHunter 50 Jan. 14 23

Akuto Stopping Junko's attack

Akuto Sai is often seen to be using powers, such as when Junko goes to attack him, his arm becomes a mass of muscle to stop it from hitting him, and similarly in a fight against "Mr. X, where his muscle mass increases. He is also shown to have an immense amount of Magical Power, shown when he turns a ball of light into a bomb by accident. Also whenever his personality changes, he is shown to be able to crush bones and severely injure opponents who give him a reason to.


-extreme amounts of magic power (though it is stated he doesn't have complete control over it in the beginning)

-the ability to remove mana from other things (shown when he was able to turn a demon dog back into a harmless puppy)



Kena Soga (fling) (spouse in manga)

Junko Hattori (girlfriend) (spouse in manga)

Korone (fling)

Fujiko Eto (spouse in manga)

Lily Shiraishi (spouse in manga)


Main Article: Akuto Sai/Gallery


The manga adaptation of Akuto was virtually identical to Light Novel and Anime counterparts. However, the manga ceased production at the event of Keno's kidnapping, leaving what happened unknown. Despite this, the manga concluded with a romantic resolution that was not present in either the Light Novel or Anime series.


Akuto married to Kena Soga,Junko Hatori,Fujiko Eto,Korone,Lily Shiraishi

Unlike in the other versions of the story, although initially shocked to learn that he had been led to the village for a marriage interview, Akuto and Junko actually talk things out. During the discussion, the couple acknowledge that they have feelings for each other and decide that they are not against the idea of getting married. As part of the discussion however, Akuto confesses that he also has feelings for Kena, Korone, Fujiko and Lily and that he plans to marry them as well. Junko is a little shocked at first, but quickly accepts this proposal. Thus, following a few misadventures with Eiko and Junko's father, the couple return to the Academy as fiances.

Shortly after arriving, the couple calls the other four girls to Akuto's room. There, Akuto proposes to all four of them simultaneously, asking them to become his wives as well. Needless to say, the group are initially shocked at this proposition, but despite their varying reactions, they all accept. Although the series ended with Keno's kidnapping, just before that, there was a massive wedding and reception, which saw Akuto marry all five of his love interests, before setting out to rescue, one of his new wives.


Akuto proposes to Kena Soga,Junko Hatori,Fujiko Eto,Korone,Lily Shiraishi


Kena Soga,Junko Hatori,Fujiko Eto,Korone,Lily Shiraishi as brides


Kena Soga,Junko Hatori,Fujiko Eto,Korone,Lily Shiraishi