MTL - I Have a Big Problem with My Achievement System - Chapter 449 Promised Rainbow Sea

When MC was reliving a picture of a goddess, he died. Only meet the goddess, but instead of torturing him to eternity, she gives him wishes. And make him reincarnated in the Overlord world.As the name suggested, this is multiverse Fan fiction, that means MC will travel through different world like Marvel, DC, High School DXD, My vampire Diaries (may be) , Demon Slayer, etc.first world: Overlord (Chapter: 1—60)second World: Highschool DXD (Chapter: 60—215)Third World: Demon Slayer(Chapter: 216—)Fourth World: New World (Overlord)There will be a harem, no NTR or stuff.Some of you might dislike the Yggdrisil arc as it is a bit of AU and MC talk a lot. But it is only in this arc on world travel that I will tone down his unnecessary internal monologue.I am not a professional writer, and I have no deep experience in writing, so please ignore my grammar mistakes and such. I also took some inspiration from other fan fiction.It would be a great help if you could donate your power stone to me.

“The simplification of the extreme mountain breathing method… the simplification is successful… the extreme mountain breathing method → ​​breathing!”

Chen Fei took a deep breath.

“Extreme mountain breathing method +1 experience.”

“…”

- Description from novelbuddy

Ethan Cole was, by all appearances, an ordinary young man navigating the familiar ups and downs of life—until the night everything changed. That was when he encountered the “Unlimited System.” This mysterious system didn’t merely make Ethan wealthy—it granted him unimaginable riches and set him on a path that was both exhilarating and perilous. The catch? Each mission the system assigns doesn’t just test his wit and resolve; it also unlocks incredible powers, elevating him to new heights of strength and influence. But this isn’t just a tale of lavish spending and indulgence—though those moments certainly add flavor! Ethan’s journey is laced with challenges, each step bringing him closer to reshaping his destiny. From building NovaTech Innovations into a technological marvel to buying a football club and even creating an app poised to revolutionize the food delivery industry, Ethan’s rise is nothing short of meteoric. And yet, the further he climbs, the more he discovers the shadows lurking behind his newfound success. Beneath the surface lies a hidden world—a world ruled by the Great Families, an elite group whose wealth is only part of their power. For these families, strength is the ultimate currency, and disputes are settled not in boardrooms but in combat arenas. Whether through sparring matches or life-and-death duels, they prove their dominance with skill, strategy, and sheer might. Drawn into this dangerous realm of secret societies, high-stakes confrontations, and unrelenting ambition, Ethan must use every ounce of his intelligence, strength, and ingenuity to navigate the intricate web of power that surrounds him. Expect a whirlwind of twists, heart-pounding action, and moments of sheer wonder. From outsmarting ruthless rivals to unraveling the enigmatic traditions of the elite families, Ethan’s journey is as unpredictable as it is thrilling. It’s a story where rules bend, reality tilts, and every turn brings something unexpected.

Thiago has nothing—no money, no connections, not even shoes.Just raw talent, a dream, and a strange System only he can see.From the streets of Rio to the world stage, this is the story of a boy who plays to survive—and fights to rise.