I Can Accumulate Proficiency, Starting from Alchemy - Chapter 53 - : Returning to the Sect

Having been reincarnated, Shen Changqing became a member of the Great Qin's Demon-Subduing Division during an era infested with Demon Evils and rampant Strange Monsters—After slaying a Ghostly Level Fiend, his Pure Yang Technique reached Perfection!After slaying a Resentment Level Monster, his Heavenly Martial Gang Qi reached Perfection!After slaying a powerful Demon Evil, he broke through his own limits!After slaying—Years later, Shen Changqing became the Defender of the Human Clan, and all sorts of Demon Evils and Strange Monsters bowed their heads in submission!“As long as I live, the Human Clan shall not perish!”

Traversing into the world of “My Hero Academia”, the awakened personality is actually a stand-in [World].

In the face of the invitation from All Might, Wu An said: “I have no interest in heroes, I just pursue power, and I have nothing to do with women.”

Facing the provocation from ALL.FOR.ONE, Wu An opened his arms and summoned his stand-in.

“THE. WORLD! Time! Stop!”…

- Description from novelbuddy

In this world, there are people living in misery, they die full of resentment and the end of their despair, they beg the devil, even at the cost of their souls, to witness the one they hate descend to hell.

This is commonly called, “making a deal with the devil.”

In the new age and new life, the newly born little incubus, You Ning, started his first deal as a devil immediately after graduation.

But what’s up with this archangel that’s chasing after him?

#Don’t fall in love with me; I’m an incubus. I don’t have feelings.#

The beautiful little incubus X the handsome, domineering, and scheming archangel.

- Description from Novelupdates

The strongest Demon Lord dies, and reincarnates as a human. Not only that, he because of various incidents turns into the hero’s best friend.

Follow his journey as he tries to help the hero escape his fate, and on the sideline to conquer the continent while he’s at it.