 	The young king of Small Cimaron who asks Yuri to call him Sara. He is extremely beautiful and at first glance seems soft-spoken and kind-hearted. He&#039;s already at adult age but still uses &#039;boku&#039; which is usually used by young males when referring to themselves. He can&#039;t remember much about his parents. He has the power of hypnosis, which he tried to use on Yuri, but with no effect. His first appearance was in the anime was during the third season where he meets a disguised Yuri at a ball. The two become friends despite misgivings Yuris friends have concerning the human king. During Yuri&#039;s visit to Small Cimaron, in what appears to be a selfless and heroic act, Sara takes an arrow in Yuri&#039;s place. Yuri is moved and even Wolfram, who had previously shown a strong dislike towards Sara, is touched by the young king&#039;s attempt to protect his fianc&eacute;. Murata and Conrad still remain suspicious of Saralegui&#039;s true motives.     ~!It later becomes clear that Berias was the one who fired the arrow as part of a plan Sara concocted in order to gain Yuri&#039;s trust. As Lanzhil declares war on Shin Makoku, Sara finally reveals his true colors, using his power to manipulate Yuri into attacking a fleet of Big Cimaron battleships. His betrayal leaves Yuri completely shaken.    Yuri soon decides that he will still trust Sara and he will continue trying to be good friends with him.     And apparently, Saralegui&#039;s mother is the current leader of the White Crows. They meet again in Shin Makoku when she tries to take Yuri away, but when she sees Saralegui, she whispers his name before fleeing.    At the end of the Series, Yuri&#039;s life is saved by Sara, making up for all the wrongs he had done towards Yuri and also gaining the gratefulness and trust of Yuri&#039;s friends.!~  (Source: Wikipedia)

At the end of season 2. Yuuri defeats Shinou, but since Shinou had been defeated, Yuuri and Murata could no longer go to the Shin Makoku. However, because Yuuri had fought and defeated him, his powers had surpassed that of Shinou's, resulting in him being able to rely on his own power to return to Shin Makoku. 
After the ceremony at the age of 16, Yuuri slowly begins to discover that much has happened while he was away. The ten officials of the noble family have decided to make Wolfram the next Maou, but now that Yuuri has returned and taken back his role as Maou, complications arise when one noble disagrees with Yuuri returning to the throne. 
In addition, an ancient secret society that threatens the peace of both humans and Mazoku has risen, and a fight for the throne that now leaves the nobles wondering who is the legitimate Maou.

Awards: 
- Most popular voice actor in the Animage Anime Grand Prix (2004)
- Best Supporting Actor at the 1st Seiyuu Awards (2007)

**Non anime roles:**

- Kamisato Ayato - Genshin Impact (Video Game)
- Otto Apocalypse - Honkai Impact 3rd (Video Game)
- Clotted Cream Cookie - Cookie Run: Kingdom (Video Game)
- Phantom - Arknights (Video Game)
- Tatsulot - Kamen Rider Kiva (Tokusatsu series)
- Luocha - Honkai: Star Rail (Video Game)

Life has returned to some form of normalcy after the end of the series, and so His Majesty Yuuri Shibuya travels to oversee how things are going. While doing so, he runs into the king of Small Shimeron--Sararegi. But it seems there may be something more to him than the friendly king he presents himself as. Yuuri go back to Shimaron to relax and meet some friends, when the "king" of Little Shimaron suddenly joins the group and wants the Maou to come to his country. The Original king sends a message to Yuuri's brother and his friend that Yuuri is in trouble.
 
(Source: Anime News Network)

Yuri Shibuya just can't catch a break. First, he had his head dunked in a toilet. Then he was transported to another world - where he finds himself king of the Mazoku's, a new race that expects him to lead them to war against all of humanity. And to top it all off, he's engaged - to a man!
 
(Source: Viz Media)

Kyou Kara Ma no Tsuku Jiyuugyou is the novel the anime and manga are based on. It's about a boy named Yuuri, who gets himself flushed down a toilet into another world. There, he finds out he's the Maoh (demon king) and that the Mazoku (demons) expect him to lead them against the human race. 
The novel is told from Yuuri's PoV, with plenty of side-commentary that is left out of the show.