There are Dungeons and Monsters In This World. The People Who Kill The Monsters Are Called Hunters and This Is Where Our Protagonist Izuku Midoriya Is Born (He Has A Little Sister Named Jin-Ah) They Get there Ranks Analized At The Age Of 10.

So, here there will be no dungeons but there will be heroes from E to S rank including villains ranked from E to S according to how strong or dangerous they are. This will be story of izuku midoriya who has the power of leveling system to change the world how he desired.

After a living in a life where only people with strong quirks could rise to the top while the rest stayed doing their regular routine. Izuku Midoriya was a kid that was born without a quirk as far as they can tell. During a crisis at the age of 15 he was at he airport seeing his father take off from the Airport. Then suddenly the airport began to crumble leaving people running for their life. Midoriya noticed a few kids that were separate from their parents and continued crying. That day Izuku made a decision that not many would do in an instant. Read Solo Leveling! #16 Leveling 01/28/2020 #1 sololeveling 02/16/2020

Izuku Midoriya. E-rank Hero. Nickname: 'World's Weakest Hero' And yet, he doesn't stop. He can't afford to. He fights, he earns, he lives. Until....disaster. He's killed in a dungeon, which went wrong in every way possible. Or....he would be.... if not for..... 'Alarm [You have completed all the necessary requirements for the secret quest 'Courage of the Week'] [You have earned the right to become a player. Will you accept?] The hell? [You do not have much time remaining.] [If you refuse, your heart will stop approximately 0.02 seconds later. Will you accept?] Huh.......pretty easy choice, right?

Izuku's quirk was unique. Only he could see it. It saved him on multiple occasions, but did it in a roundabout way. It gave him an incentive to save himself. *WARNING* Several entities seek to commit non-lethal harm to you. Fend for yourself, or receive a penalty.