Toaru Majutsu no Index SS - Volume 2, Chapter 21: Those with an Undetermined Identity. The Second Friday of October.

An ultimate warrior, the one and only Alchemy Emperor, Ling Han, died in his quest to achieve godhood. Ten thousands years later, he, with the ‘Invincible Heaven Scroll’, was reborn in the body of a young man with the same name. From then on, winds and clouds moved as he set himself against the uncountable geniuses of this new era. His path of becoming a legend has begun once more. Of all eras underneath the heavens, I am the strongest!

[Mutual favorite sweet text + sick Jiao + cute baby] She is a gifted girl, and she is one step away from the Olympic champion, but she unexpectedly became pregnant, passed her dream and fell to the altar.

He is a genius scholar, a cold-blooded, decisive business wizard, a sudden car accident, it is said that his IQ is only five years old.

The first time we met, in the bathroom, he was pulling her clothes: you looked at my body and you have to be responsible for me.

Well, she’s in charge. No one cares about him, she cares, no one loves him, she loves, no one pets, she pets.

Unexpectedly, on a quiet night, he put her on the bed, little thing, this time it’s my turn to spoil you!

The woman smiled wickedly, why don’t you ask my richest father, actress mother, actor brother, MD brother, and that trash twin brother first?

During the day, she hurt him to the bone.

At night, he spoiled her like his life.

The paranoid, arrogant and sickly male protagonist and the salty and sweet sassy female protagonist tease each other sweetly!

- Description from novelbuddy

A world where one’s life was decided by one’s talent called Gift.
The main character Erio Scarlet who was born in the house of influential noble family that had produced a lot of Holy Knights manifested a suspicious gift Incubus in the conferment ceremony. Furthermore the skill attached to that Gift was only one embarrassing skill called Peerless.

Erio was banished from the city because there was no way his indecent existence could be permitted in a family of Holy Knights but……somehow he went through an amazing growth when he dealt with his horniness though!?

In addition when his childhood friend who was bestowed with the Gift Sacred Knight chased after the main character because of her love for him reverse ra-……did it with him, a lot of powerful indecent skills showed up and on top of that they even got bound by Master-Servant contract……!?

This was the indecent heroic tale of the boy who was gifted with indecent Gift rising in the world while [getting along] with a lot of girls.