The Legendary Mechanic

Weak to strong Beautiful female lead Calm protagonist Handsome male lead Older love interests Magic Male protagonist Overpowered protagonist Transmigration Aliens Outer space Genetic modifications Special abilities Magical technology Assassins Futuristic setting Ruthless protagonist Time skip Game elements Clever protagonist Monsters Wars Military Army Strategic battles Army building Technological gap Level system Selfish protagonist Crafting Hard working protagonist Loyal subordinates Artificial intelligence Automatons Adapted to anime Evolution Multiple pov Race change Wealthy characters Romantic subplot Firearms Cunning protagonist Evil organizations Shameless protagonist Transported into a game world Industrialization Lost civilizations Politics Pragmatic protagonist Proactive protagonist Skill assimilation Secret identity Late romance Adapted to manhua Gamers Cautious protagonist Time travel Cosmic wars Multiple identities Secret organizations Gunfighters Parody Poor to rich Quirky characters Hiding true identity Past plays a big role Unlucky protagonist Money grubber Brainwashing Game ranking system Strength based social hierarchy Famous protagonist Engineer Narcissistic protagonist Mercenaries