My Little Sister Cute Outside, But Yandere Inside!
Chapter 13 - Master x Servant

I got up from my seat and held Chiyuki in Princess Carry style. The chess match that previously met a dead end was won by us. I could see Mercedes staring at the chessboard as if she couldn't believe it.

Again, I doubt Mercedes' capabilities. Although in his previous life he was a troublesome enemy, but after this match I became convinced he became a troublesome enemy because our information was always leaking towards him.

Mercedes tinkers with one's mind and uses that as a foundation of information that supports its pace. No wonder Chiyuki was made difficult by her ability.

Beating Mercedes was easy. With a small trap that I prepared it turned out to be able to make it move according to what I wanted.

My thoughts and movements are divided into two parts. I've predicted that Mercedes will look at my thoughts beforehand and know the tactics I've prepared to defeat him. For this reason, a beautiful trap has been made. My thoughts and handwriting are very different. Using my mind thinking of tactics to set up a fake trap while my handwriting led Chiyuki to create a genuine trap.

I don't usually think hard like this. Two consciousnesses are different at one time.

Mercedes is not our obstacle now, if he joins my side then it will be a multiple advantage. You could say this is gambling against the Mercedes ego.

If he becomes an enemy, I can think of another tactic to outwit his mind-reading ability.

I walked towards the exit. Carrying Chiyuki who was covering her body because part of the clothes worn had been detached from her body. I could feel his body trembling withstanding the shame.

When I was about to step out. Mercedes says something, “How to?”.

I'm pretty sure he's confused about what happened. This incident further clarifies the status of our situation. Get a Mercedes on my side or take off a Mercedes. Both do not cause major losses.

“You should have understood, right?” my gaze turned to the book that was still lying on the sofa. The handwriting left in it was enough to tell him.

Mercedes seemed to understand my eye movements and shifted her focus to the book.

Before I left this room, I teased her a little.

“Mercedes.collaboration between people involves a sense of trust. You can give me a reason why I should trust a mind-reading Elf. Your abilities are very dangerous but.”

“It seems. You too can be defeated. You need something else to gain my trust” I walk away from this room.

I could feel the piercing glare of Mercedes.

On the way after leaving the room, Chiyuki pulled my sleeve.

“Onii-sama? Is it okay to let such a unique ability go?” ask Chiyuki.

“With his ability, he can be both allies and enemies simultaneously. The ability to read his mind will make him worry. Without mutual trust, I could sense hundreds of possible betrayals. Worst possibility is enemy Mercedes in a troublesome blanket.”

“But, isn't Onii-sama suggesting Mercedes?”

I don't want him to be an enemy and I hope to make peace with him.

[...]

As dinner was about to take place, I was surprised by the appearance of Mercedes in the family dining room. Mercedes kneels on a flaming magic circle.

“You're still not back?” ask me.

I'm pretty sure he'll be back after hearing my scathing statement earlier. But he survived into the night.

“Karl-sama.. ah! Nah! Master Karl.. allow me to be your servant!” said Mercedes.

I don't know what's on his mind. I turned to look at my Mom and Dad. Their facial expressions said, “I give up completely on you!”.

I can only accept this situation.

Luckily, Mercedes chose me. In this life we formed an alliance. I think this fits the proverb “The enemy of my enemy is my friend”.

In another sense, we establish a Master-Servant contract to achieve that goal.

I answered Mercedes' request and walked towards her direction. Mercedes pulled my hand and kissed my palm. A magic circle appeared in my palm and my bond with Mercedes turned into a Master-Servant.

“I, Mercedes Lii Virerstas undis Relatis Oiur Pertanis Sier, hereby vow to hand over what I have to belong to my Master.”

After saying that sentence, the magic circle dimmed and ended the contract we made.

Well, for Elves, accompanying a short human life is just a filler of free time for them.

A contract like this might expire in an instant.

But for me, it's an opportunity I can't miss.

“Mercedes, as your Master. I forbid you to read my family's thoughts.”

With this, the first order for Mercedes is already determined.

“Ready, Master Karl!” mercedes Sahut.

[...]