Starting with the Seven Shields Alliance, I'll Crush Everything

The good news: I transmigrated into a game world, and I was the all-conquering final boss! The bad news: The world line had changed, all my subordinates were dead, and I was gravely wounded and on the verge of death! Faced with what looked like a hopeless start, Du Mo decided to flip the table! Elves? Monsters? Nobles? I came to this world to blast every last one of you clueless fools into oblivion!!! Buy them off? Make deals? Play along? None of that! A proper transmigrator takes on the whole world single-handedly!!! Win over my subordinates? Not a chance! The strong take everything into their own hands! What's the point of being strong if you can't do whatever you want?! After reaching the top as the strongest in another world, Du Mo turned his gaze toward even more worlds! You're the one who stands above all, Ryomen Sukuna? Great, let's fight! You're the pirate emperor, strongest on land and sea? Great, let's fight! You're the progenitor of the Quincy, alive for a thousand years? Great, let's fight! The fiercest! The most intense! The strongest! The most unruly! (Setting sail once more! All-out battles, no suffering, no pretentious literary angst!!!)