A murderer is summoned to another world by Lucifer Morningstar himself.
The Apocalypse was stolen and he wants revenge.
Lenny is a man with a twisted personality, but his skills in killing had no second on the surface of the earth.
As an Assassin, how will he play with his blade when the devil is his employer?
“Devil Slave (Satan system)” novel is a popular light novel covering Fantasy, Adult, Adventure, Action, Reincarnation genres. Written by the author Dere_Isaac. 784 chapters have been translated and translation of other chapters are in progress.
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