Adaptation
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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)
Adaptation
Born and raised in Japan for 15 years, Yuri Shibuya, an ordinary baseball boy, is suddenly transported to another world one day. He ends up in a world where people with black eyes and black hair are feared as "devil lords"... Surrounded by his beautiful and unique subjects, His Majesty Yuri has been appointed as the 27th Demon King of the Great Demon Kingdom. What will tomorrow be like? Delivered full of original elements! [Web manga on Comic Bushiroad Web](https://comic-growl.com/episode/13933686331795933166)
Parody
Pairing: Yuuri x Wolfram From [Onadoru Euphoria](https://www.mangaupdates.com/groups.html?id=670): A Wolfram-centric doujinshi about Wolfram and his father's wish for him to be king.