Enigmatic_Dream

WPC NOV Winner
***
“Hmph, my dumb big sister is in danger!”
A mischievous grin spread across his face. “Hehehehe... this gives me the perfect excuse to finally use this treasure I’ve acquired but never bothered with!”
He rummaged through his belongings, carefully selecting various items. “A bit of this... and this... and a dash of this.”
Boom!
The explosion of energy sent a ripple through the air as he laughed maniacally.
“Hahaha! It's done! Now, all I need is a compatible host for it.”

Years later...

“Did I overdo it?” he wondered in awe, watching as his creation wreaked havoc, conquering world after world with ease, as though stealing candies from children.

****
As you saw the synopsis, it will be :-
Op Mc
Harem
World Travels
And one side beating

Absolute Cheater

Genevieve handed him a sealed envelope. "This will grant you passage through the Guild's restricted zones. There are creatures in the Poisonous Swamp even S-rank adventurers avoid. Don't get careless."

Asher nodded as he leaned in slightly as he asked " who is this Crazy bitch?" he asked pointing at Melina.

Genevieve sighed. "She's crazy, but she's one of our Transcendent-rank adventurers. Don't mind her too much. Her ability causes her target's bones to explode. It's like she has adapted to her absurd ability, though others haven't—after all, it's quite unorthodox."

Asher nodded. "Hm, Bone Bomb, huh? Though, if I were to guess, I'd think it was more like Bone Manipulation."

10,000 Poison Land