SSS Ranked Talent: I Can Upgrade My Skills Infinitely

He was a desperate survivor in a world devoured by monsters and gods, only to be granted a second chance. Reborn three years in the past, Alvian awakens moments before the launch of the hyper-realistic VR game "gods domain." He knows the horrifying truth: this is no game. In one year, the Convergence will merge worlds, and humanity will be the prey.During character creation, he makes a gamble that defies all logic. He abandons all pre-set classes for the custom class: "SkillBurst"...no starting skills, no stat bonuses...a path to failure for anyone else.As the system processes his suicidal choice, a new alert flashes before his eyes:[The System, recognizing this extreme handicap, has granted a compensatory reward!][Ding! You have acquired the Sole SSS-Rank Talent: Super Upgrade System!]Instantly, the rules of the game are shattered. His path is no longer one of desperation, but of absolute domination.[You have learned the Legendary skill (Shadow Weave)!][Super Upgrade System Activated! The skill has bypassed its limits!][Congratulations on acquiring [Shadow Weave +2], granting damage immunity and near-perfect uptime!]While other players grind starter mobs, Alvian becomes an invisible phantom, assassinating a high-level exam boss before anyone can even react.While the academy's elite follow the rules, Alvian exploits his future knowledge to gain legendary skills and world-first achievements.[You have learned the flawed AOE spell (Frost Descent), noted as un-upgradable with a high chance of self-injury.][Super Upgrade System Activated!][Congratulations! The self-harm drawback has been REMOVED! The spell now deals catastrophic damage and applies a powerful slowing debuff!]Armed with a talent that breaks the very concept of limits, Alvian's rise is unstoppable.Dismissed as a cheater by the academy's top prodigy? He leaves her in the dust, turning her rivalry into conflicted awe and eventually, hard-earned respect.Faced with an unkillable Apostle of a Calamity Demon? He achieves a World-First kill that puts his name on the global stage and reveals a terrifying truth: the apocalypse is coming faster than he ever predicted.Considered a classless anomaly? He conquers the Overlords Academy Championship, forges a legendary weapon, and uncovers a conspiracy that threatens to tear humanity's last bastion apart from the inside.But Alvian's greatest power isn't just his talentit's the knowledge of the horrors to come.He will infiltrate doomsday cults, battle corrupted leaders, and stand against a newly awakened Demon God.Follow Alvian's journey from a traumatized survivor to a world-breaking anomaly.With the Convergence accelerating and humanity's last bastion falling from the sky, will his one-of-a-kind talent be enough to avert the end of the world, or will this second chance be his last?