One Piece : Roger Is My Vice Captain - Chapter 4 - Shadows of the old times!

It’s a affair between a loyal dog servant and his master.

- Description from Novelupdates

In this brand new era of Beast Taming, who can rightfully claim the title of the King of Beasts?

When struggling actor Liam Cross is gunned down during a bar robbery, he expects the lights to fade for good.Instead, he opens his eyes in a throne room surrounded by demons – standing inside a summoning circle meant to call forth an ancient Demon God.Only, the god never came.Just him.With no magic, no divinity, and no clue how he got there, Liam is mistaken for Azrakul, the Primordial Demon: a being of infinite power the Demon Queen desperately sought to save her crumbling empire.But when a mysterious System awakens, Liam learns the truth:He’s not a god… yet.[Designation: “Infernal Sovereign” — Activated.][Requirement: Subjugate the Realm of Demons.][Power Source: Fear. Faith. Belief.]The System doesn’t just grant strength.Instead, it feeds on the belief of others – turning fear, faith, and lies into real, tangible power.And as an actor who’s spent his whole life pretending to be something greater, Liam finally finds the role he was born to play.Now trapped among ancient monsters and scheming demon nobles, he must perform the part of a god convincingly enough to survive.Because if the demons ever discover he’s a fraud…He’ll die as the man he’s always been—or ascend as the monster he pretended to be.