Cote - Tensura Crossover

Prologue

It has been several years since the final battle against Yuuki. This battle was quite difficult and it took a long time to repair all the damage, but after a while, the world was stabilized and now everyone can live in peace.

Our civilization is not that evolved, so it's not like I can play video games or anything. The only way I am entertained is when I am with a certain person.

Today, I decided to do something to escape this boredom. I then talked with my skill Ciel who is the smartest person I know. Ciel then suggested something to me.

<<Master, how about we reincarnate to another world?>>

I decided to reincarnate to another world while my real body is in my imaginary space with Ciel. I need to inform my subordinates, so that they won't had to worry about me.

I gathered all my executives and important friends in the boardroom. Everyone was sitting at a large table and I stood up to speak. 

"Okay, I'm going to be reincarnated in another world" I declared as if it was something normal Everyone got dumbfounded and let out confused groans .

Shion "Rimuru-sama, What do you mean?" All my Subordinates seems to want to know why I want to reincarnate in another world.

"I decided to reincarnate because I've been bored for a few years and my mind seeks entertainment. Don't worry I will be back. Also, If there any danger lurking around tempest you can just contact me using thought communication to Ciel," I said reassuring them after some times convincing them Shion wants to come with me but I refuse.

Since I'm a higher spiritual life form. I can just transfer my soul to my old world so I can reincarnate by transferring my soul into the human body.

That was what Ciel said to me to get out of my boredom. I don't know in which universe I will be reincarnated because I left everything to Ciel, but since I trust her, I think it will be a great life.

"Okay then, I'll say goodbye to the people and go tomorrow. I will leave an unwilling clone that you can control so that my 'trip' doesn't become public. The meeting is adjourned." I would leave a clone because if the strongest demon lords are not here in the tempest it would be problematic especially some humans will try to rebel and capture the tempest.

I also said goodbye to a few people that are important to me and people who needed to know I left all the things. I'll let my subordinates to do the rest. I have good confidence in them.

A day later I said goodbye and then started to reincarnate, I won't explain this process to you because when Ciel explained it to me even I didn't understand so I just said "reincarnate me into a fun life" and the process started.

[Creating Body Gender: Female]

("Wait- Ciel, Make my gender a boy") I said with Puppy eyes which Ciel can't say No

<<F-fine, But you have to take me on date>>

("Yes, I will take you on a date")

[Creating Human Body Gender: Male Age: 1 Parent: Ayanokōji] A/N Since I don't know Ayanokouji Mother name

[Reincarnation Starting]

My eyes become blurry and after a while, I finally opened my eyes. I saw a hospital room and I hear a crying baby which is not me. It seems I have a brother and I started to cry to not raise suspicion and felt a hand patting my back.

"Buaaa-Buaaa" I made the best cry I can make. If any demon lords saw me like this. They will definitely laugh so hard.

As I suspected the other cry was from my twin brother, my parents seemed to have gambled with our birth, which makes me realize that this family may not be as normal as I thought. I was still staging the cry when the doctor placed me in my mother's arms. I looked at her, analyzing her appearance.

"You'll be Rimuru and your brother will be Kiyotaka"

The END