Bleach: Watch Closely, This Is How You Use a Zanpakutō - Chapter 34: Plan

Reincarnated without memories, given a second chance as a chimera with a limited lifespan. Leon struggles through his strange new life. He attempts to improve his dungeon and evolve himself to live longer and become the strongest Dungeon Master—no. The Dungeon Overlord.Helped by his Dungeon System: the mysterious Ifrit, Zafira a Level 100 Succubus Queen, and his band of trustee goblins. Leon aims to overcome his limits, survive and reach the pinnacle of the world. Whether through trade, domination, or tricking the hero's beautiful party members into becoming his private mercenaries.Leon will face the weakest and strongest beings in the magical world of Umbra and surpass all!

Lin Mu Yu is one of the top players in Conquest the game before Destiny. He decides to delete his account due to a promise with his father.

Before he deletes his account, he sells all of his equipment and deletes all of his skills. After deleting his account, he suddenly gets his deletion overwritten by a mysterious source and ends up getting trapped in the game itself.

Without anything except for 3 of his skills, how will he survive?

- Description from Novelupdates

By coincidence, Li Yunmu found a super machine from humanity’s age of darkness. From that point onwards, his ordinary life would never be the same! Aptitude? Innate talent? What are these? Could they be eaten?

I have neither aptitude nor innate skill, but my shadow can level up using hacks. Experience, Ability points, battle prowess… all of them could be hacked. Even while he is asleep or tired, he could still increase his skills.

- Description from Novelupdates

It begins on the mountain.

With the glint of a knife, a flash of steel in the hands of a sworn brother. A betrayal.

Stabbed and pushed down the mountain, Zi Chen lied within the red-stained snow, left to die.

This is where it begins; he is given life by lightning,
baptized by thunder.

Those who had once betrayed him should all suffer in his cruel revenge.

- Description from Novelupdates