World Keeper - Chapter 6: Mistakes Were Made, and Fixed!

He had crossed into the dark, ruthless Wizard World.Lucien found his system somewhat different from the usual golden finger.System upgrade points? Chip activation?None of these, but rather becoming a role model, transforming into a nurturing breeze:Teaching students knowledge, receiving advanced knowledge in return.Caring for and maintaining students, earning generous rewards.[Your student has mastered the Magic Potion “Kuru's Cough,” congratulations on acquiring the improved formula “Kuru's Cough - Enhanced”!][Your student has mastered witchcraft “Fireball,” congratulations on learning witchcraft “Greater Fireball”!][Your student has successfully crafted the wizard's tool “Pale Mask,” congratulations on acquiring the wizard tool’s manual “Revised Pale Mask”!]Initially, Lucien was resistant.But after experiencing what it was like to teach disciples and outdo them, Lucien felt he had completely transformed into the form of the master system.This thing, isn't it much more useful than something called Cheating Device?

When I woke up, I had been reborn as a baby. My mother passed away and I was neglected by my father. Even though I was born in a Marquis family, my life started on a HARD MODE. But I won’t be discouraged. I will eat well, sleep well, move much, get whatever I can get and live happily.

After successfully completing the tasks of the B-Class World, Lu Yue finally succeeded in entering the A-Class world.

What? The blackening value of the males in the A-class world is above 80!!

Lu Yue: What are you afraid of? Calm down!

This is a story of a drama king and a black-bellied male.

First World: Mafia’s Pet Lover
Second World: Revenge of the Reborn Boyfriend
Third World: Emperor is a Ladies’ Man…

- Description from Novelupdates

An otaku with a hobby of masturbating was reincarnated as the son of a great mage.

As soon as he was born in this life, he vowed with a goal of embracing women till his death.

That said, when he became 20 years old, the Demon Lord which was sealed by his ancestors revived, and now it is his role to seal it once again.

And that demon lord is sealed in a tower dungeon that is rumored to be impossible to capture.

However, by an unexpected coincidence, he had found out that the Demon Lord is also one of him, a kindred spirit from within,

so he joined her instead and filled several traps in the tower dungeon, and thus they enjoyed a s*x spree with all the women coming over!