Ultraman: I Become Hikari from the Start, and I'm Invincible!

[System + Invincible + Protector + Humanity in Shock] Lin Yu drowned in a university swimming pool. When he woke up, he had become Hikari, a Blue Ultraman from the Land of Light! The Knight’s Breath on his wrist began to burn, and a mechanical voice rang in his mind: [Ding! Invincible Protection System activated. Newbie gift pack: full mastery of the Knight’s Breath + doubled combat power!] Just as he was getting used to his new body, the ground in Donghai City split open. The hundred-meter-tall “Earthsplitter Beast” burst from beneath the surface, buildings collapsed, and people screamed! “Run! This monster is even fiercer than Gomora!” Lin Yu’s gaze hardened as he leaped forward. “Don’t be afraid. I’m here.” Blue light shot into the sky. Hikari landed with enough force to crack the earth, and his Knight Blade flashed out in an instant! “Whoosh!” The Earthsplitter Beast’s head went flying, and its boiling blood sprayed three meters into the air! Everyone in the Sky Dome Defense Force command room froze. “This Ultraman… is even more unhinged than Zero?!” From Earth’s native monsters to cosmic evil gods, from Alien Empera to Dark Lugiel, Lin Yu swept through them all with the Knight’s Breath in hand! Humanity: “Lord Hikari, please protect us!” Land of Light: “Is this really the same scientist Hikari?!” Lin Yu sneered. “I only ever need one move to fight monsters. I’ll spend my whole life protecting humanity!” [Three chapters every day. Nonstop monsters, explosive thrills, and absolutely no dragging things out!]