A skilled thief gets a system in an Alternate Wizarding World. The system seems useless in the beginning since he hasn't unlocked any features. But...
[The very first feature of the System has been unlocked.]
[Congratulations. You've unlocked the class feature. Due to your existing skills and experience, you have gained the Special Class \

He became stronger, faster than anyone else... but he lost. In the end, there was only despair for Kim YuWon.
In his last moments, he was given another chance... Through the sacrifice of his comrade, his fate had not been sealed yet.
Returning back to the past, he attempts to climb the Tower again with his unmatched talent.
To fight the ancient evils that threatens to destroy the Tower.

Join Lu Yin on an epic journey across the Universe, pursuing the truth and tragedy of his past. This is a world of science fantasy where the older generations step back and allow the young to take charge of affairs. Heart-wrenching separations, terrifying situations, all with comic relief that will leave you coming back for more. This is a world where the other characters actually matter, and are revisited frequently as their own lives unfold. Dotting Lu Yinas path are monumental feats of kingdom-building and treacherous political situations where he must tread carefully if he wants to get to the truth of his history.

JoJo?
No, this is Dio!
After crossing, the protagonist is examining his new identity aggressivelya Dio Brando, a British and Chinese mixed-race coach ratio!
But wait a minutea|
This is the Marvel Universe? How long will it take for Thanos to reach the battlefield?
By the way, I have a cheat!
Star Platinum, The World, Crazy Diamond, Killer Queen, Gold Experience, King Crimsona| All for me!
Ding, hello new player, your first Stand has been drawn.
Looking at the aLittle Tomatoa who was smiling at him, as the only Stand User in the Marvel Universe, Dio was speechless, then lit a cigarette silently, looked up at the ceiling, exhales smoke, itas just a mystery how life is so harsh!

Your meridians cannot be cultivated? Itas ok! There are CrazyLeveling System, do missions, kill monsters, swallow other peopleasspiritual power, make pills or forge weapon, participate in big battle,you can gain experience!EXP is too low? No worries! I have double EXP card, ten times EXP card! EXP bursts and level rises!What genius, big family young master, empire emperor, and talent? Inthe face of this Crazy Leveling System, they are far behind!aHuh, did I level up again?a Yi Tianyun woke up and found himself level up againa|

aCompared to our time, the current generation just arenat as reliablea they said, aStill, isnat he the son of the Hero?a How annoying.
Itas been over ten years since the battle between mankind and the demons ended. The children of the heroes who saved the world are all grown up.
One of them, Earth, was a talented man, and everyone expected him to succeed his father as a warrior and defend his country, but Earth was always wary of his fatheras title.
One day, Earth is shocked to find his fatheras sword, which was used to overthrow the Demon King, sealed in his familyas mansion.
Because trapped within was the ghost of the Great Demon King who was unable to pass on and continued to roam the world.
For some reason, only he could see the spirit of the Demon King, and the Demon King possessed him through the sword.
Every day, forced to coexist with the spirit of the Demon King, they live a strange shared life, when the Demon King whispers to Earth on a whim.
aI have a grudge against your father. If you want to get back at your father and the world, Iall train you. Iam free.a
Earth receives special personal guidance from the Demon King just to get back at his parents and the world.
Then, in the coming days. The heroas parents, the heroes of the past, the first love, the princess childhood friend, the geniuses of the era, and the world will tremble.

The weak prince of an insignificant country, Davey. After becoming comatose, his soul escaped to a temple where the souls of heroes gathered.
He trained for a thousand years and has now returned as a max level hero!
aJust you guys wait, Iam gonna face you all head-on!a
The refreshing story of Daveyas royal life and revenge has just begun.

Deek has never had success with the ladies. Heas poor, overweight, and generally unliked. Feeling like a burden on his mother, with his life going nowhere, he spends his days playing video games. However, when a mysterious game ends up in his bag, he is teleported to another world. The only way for a talentless slob like him to get by is to venture into dangerous dungeons for fame and money. Regrettably, Deek always preferred to play support roles, and in this case he picked White Mage. In a world with slavery, where he can purchase beautiful and powerful women as his allies, this might actually work.
Tags: Isekai, Slice-of-life, RPG, Weak-Protagonist, Comedy, Harem, Large-Harem, Slavery, Romance, Animalgirls, Monstergirls, Dungeons, Drama, Erotica, Growing-protagonist