Imagine sacrificing everything to save a world, only to be betrayed by the very gods you served. That's the brutal reality Rey faces in *Extra's Revenge: Reincarnated As A Slave*. After giving his all as a summoned "Extra" to rescue a dying world, Rey is callously executed by the supreme beings who rule the cosmos. As if that weren't enough, they obliterate his family and the world he bled to protect, leaving nothing but ashes in their wake. But fate, it seems, has a twisted sense of humor. Rey is reborn not into paradise, but into the very dimension of those who orchestrated his demise. Stripped of his former glory and forced into slavery, he's now a nameless pawn in their cruel game. Yet, the fire of vengeance burns bright within him. This is the story of an underdog, a hero betrayed, who must rise from the depths of servitude to exact retribution upon those who wronged him. *Extra's Revenge* promises a thrilling journey of action, adventure, and slow-burn magic as Rey navigates treacherous landscapes, hones his abilities, and forges unlikely alliances. With elements of academy life, superpower cultivation, and transmigration, this novel explores themes of betrayal, justice, and the indomitable spirit of one man determined to shatter the established order. Prepare for a tale where no one will escape the consequences of their actions.