アイヴィス・ネクロン
Ivis Necron is a character in The Misfit of Demon King Academy: History’s Strongest Demon King Reincarnates and Goes to School with His Descendants. Every place you can read or watch that story is listed on its own page.
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The Misfit of Demon King Academy: History’s Strongest Demon King Reincarnates and Goes to School with His Descendants anime Supporting 
The Misfit of Demon King Academy Ⅱ: History's Strongest Demon King Reincarnates and Goes to School with His Descendants anime Supporting 
The Misfit of Demon King Academy manga Supporting One of the Seven Elder Demon Emperors created by Anos, as well as the head of the Necron family.