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There's A Demon Lord On The Floor manga online by author(s): Hato for free Alternative Titles: 地板下的魔王大人 ; フロアに魔王がいます ; Floor ni Maoh ga Imasu ; Floor ni Maou ga Imasu ; There's a Demon Lord on the (Restaurant) Floor. If you line Chapter 4 of the There's A Demon Lord On The Floor sign up for updates and read the new parts first!