Magika no Kenshi to Shoukan Maou - Volume 12 Chapter 1 — Trigger of Passion (Part 3-4)

An 18-year-old poor college student tried to apply for a job as a tutor but his life almost ended as demons' meal. In his last breath, a mysterious woman gave him a strange power. When he opened his eyes he had turned into a demon with a system that would turn him into… A pervert.

Now he must lived with his dual identity as a model student named Ethan and an incubus named Damian.

I am the sword.

Killing a man amidst a thousand miles, no one dares take ten steps.
Killing a man amidst a thousand miles, no one can take ten steps.
Killing a man amidst a thousand miles, ten steps? Not possible!

I am the sword, the sword is me,
On the path towards heaven, each shall wield their own.

- Description from Novelupdates

In the 5th year of Konoha’s founding.The battle between Hashirama Senju and Madara Uchiha at the Valley of the End had come to a close.In order to treat his elder brother’s injuries, Tobirama Senju resurrected a medical ninja from ancient times, hoping that this individual could prevent the injuries from shortening his brother’s lifespan.This medical ninja’s name was Emiya Shigen.

Looking at the system’s golden fingers after crossing through it, what can Susie do? Su Shi is also very desperate!

However, the next scene made him stunned.
A popular female star, suddenly confessed to him?
The sister of the relationship is like a fire, actually cooking for him?
Never look at a man’s cold and proud school flower, do you want to live in his home as a fiancee?

Did this group of girls brains? I don’t know them at all! ! !
of course not! It is because they have acquired the subsystem of Su Shi’s protagonist system, and they have a main task that they can’t think of!
– Become a girlfriend of Su Shi!

- Description from uukanshu translation