Ren Amaki, summoned as the Sword Hero, hails from a technologically advanced Japan where VRMMO games like *Brave Star Online* dominate society. His life abruptly ends while shielding a childhood friend from a murderer, leaving him fatally wounded. Reborn in a world mirroring his beloved game, he clings to the belief that game mechanics govern reality, fixating on leveling up and solo play over collaboration. He views party members as disposable tools, managing them like a guild and engaging allies only for tactical gain. His appearance mirrors standard isekai protagonists: short black hair, piercing blue eyes, and dark attire accentuated by a navy scarf and fragmented armor. Early choices expose his ruthlessly pragmatic nature. Deceived by slavers, he slays a dragon and abandons its corpse, unwittingly unleashing a plague. The devastation forces him to acknowledge real-world consequences, spurring a rare apology to Naofumi Iwatani, the Shield Hero. Yet arrogance lingers—he scorns training, fixates on level grinding, and underestimates foes like the Spirit Tortoise. A reckless assault on the Tortoise obliterates his party, crushing his self-assurance. Exploited by Malty Melromarc, he loses his gear and spirals into the Curse Series of Greed and Gluttony, morphing into a bandit leader who steals and murders to sate his hunger for power. Redemption sparks when Eclair Seaetto defeats him in a duel, shattering his denial of vulnerability. Naofumi’s intervention breaks the curse’s hold. Reborn, Ren discards his aloof persona, trains under Eclair, and embraces cooperation. He confronts past errors—including unwittingly killing Wyndia’s adoptive dragon father—and seeks atonement by aiding Naofumi’s quest to save their world. Growth manifests in language study, village rebuilding, and prioritizing teamwork over solo glory. His Sword Hero abilities revolve around the Legendary Sword, unleashing skills such as Thunder Sword, Meteor Sword, and Phoenix Gale Sword. The Curse Series grants Guillotine and Gold Rebellion, though they exact a toll through weapon degradation and experience loss. Post-redemption, he masters refined swordsmanship and tactical combat, eschewing cursed powers. His arc traces a prideful loner’s evolution into a disciplined ally, emphasizing self-mastery. Expanded web novel lore deepens his journey. After two years of training in another world, he returns with sharpened skills and matured resolve. Relationships shift—subtle bonds with Eclair and Wyndia evolve into marriages. In final battles, unwavering trust in Naofumi cements his role within a united front against catastrophe. This trajectory transforms him from a guilt-ridden outcast to a steadfast hero dedicated to redemption.