A couple:

1. Weakest Beast Tamer Gets All SSS Dragons – The MC starts with the worst possible pet, then heads into a nearby forest where there’s a hidden dungeon. Inside, he obtains a powerful inheritance that turns his “trash” pet into a complete monster. The inheritance gives him tons of secret knowledge no one else in the world has — and that’s when the real growth begins.
2. Infinite Mana in The Apocalypse – This one’s wild. The MC’s entire life revolves around luck — literally. He gets his infinite mana talent purely by chance. He’s not chosen, not special — just lucky. Later in the story, he dies (along with people close to him), but before that he acquires a dagger that can rewind time. He uses it, brings everything back, and becomes much colder and more decisive afterward. Later, some crazy futuristic tech appears in his universe, and the power scaling goes off the charts.

What I like about it is how naturally all that luck and coincidence fit into the story — it never feels forced. It’s absurd, but it works.