The end...

I planned to assimilate some kind of technology and merge it in my body. 

Aletia didn't need it since she felt her magic was enough for her. She outright denied the idea. She was also wary of AI taking over our brain.

At the end, we agreed to just implant something like nanotech in my body. 

Abducting one of the royal-class robot, I started disassembling it. Aletia, who knew nothing of this, refrained from experimenting and quietly stood at a corner.

Royal class robots were made purely of nano technology. After disassembling it, I reprogrammed it for human body. After using my own magical energy to alter my body, I pricked my finger and let all the nano bots flow through my body. With protection from magic and my programming, it won't harm me in slightest way. 

Pain from something like this was nothing to me. I could even destroy the concept of pain if I wanted to.

"Done."

After I confirmed, Aletia quickly walked towards me and started checking my body physically and using magic. After confirming that I was fine, she sighed in relief.

"What did you do?" She asked me curiously.

"I just used the nanobots used to create this robot and changed their properties. Now it's functions are more varied than before. I also modified my body to create a unique pathway around my body just for these nanobots. On top of that, they can also create more of themselves if I just provide the right resources." I explained.

"..." Aletia remained quite after hearing my explanation.

She didn't understand what I said but she believed that I had thought everything before I performed it so it should be fine.

"...You didn't understand anything, right?" I teased her on seeing her blank face.

"Wha-!! I understood it clearly!" Aletia felt like she was being treated as stupid and declared. Her face turning bright red.

"Yeah sure, I believe you. Let's go destroy MOTHER now." 

"Hmph! Let's go!"

I feel like my wife is turning tsundere now...

-----

In front of a huge castle, I and Aletia suddenly appeared. We were both floating in the air above the castle.

Clinging to me, Aletia raised her right hand in the air.

"Ice coffin." She softly muttered.

Whole castle was crushed under ice. After remembering concept magics, she used them along with her regular magic to exert power thousands of times stronger than her maximum.

MOTHER was nothing but a small ant to us. It was a simple thing which could be destroyed any moment we want. After destroying it's physical form, I let an AI handle it's technological extermination.

"Well, that's over quickly." I sighed in boredom.

"What? Did you expect her to put on a fight?" Aletia giggled and asked.

"...Let's just go to some other world." 

Right... What was I even expecting here?

-----

After that I and Aletia kept travelling from one world to other. Slowly enjoying our life and exploring the parts of world we didn't explore in last life. 

In this life we didn't unify all the worlds. Instead we destroyed some of them.

After a complete 300 years, we finally returned back to Tortus. 

Tortus had modified a lot compared to the time we left. In some of the better areas, it had progressed a lot more than it ever did in anime.

Some of the cities even had intergalactic travelling devices. 

Aletia's uncle was still alive and healthy. 

After returning back to Tortus, I visited the current pope, Ishtar. Just like in anime, Ehit's religion was widespread. Only difference was that here I was worshipped and recieved all the faith energy.

I ordered Ishtar to summon people from other world as heroes and have them fight against demons of this world.

As their god, I didn't even need to give them a reason. They immediately started obeying my orders.

Using my power, they started the summoning process.

I called back Aletia from her uncle's castle to witness the heroes summoning.

Since it was gonna take some time to prepare for summoning, I started conversing with Aletia about all the time we loved in this world. She also sensed something.

"What's wrong?" She asked me.

Seeing her worry about me, caused a smile to bloom on my face. I started explaining her about the system and simulation. 

"...So it's your time to go?" She asked me in a voice that could barely be considered a whisper.

"Unfortunately, yes." I hugged her immediately.

Using my omnipotent authority, I created some special blue crystals. Each containing the origin of everything. Unfortunately only five of these could exist in a world or the world might break.

Using the power one crystal, it was possible to travel between omniverses but after a day you would return back to your original world.

Until I find a way to travel between omniverses myself, this should suffice.

After giving these crystals to her, I looked at her any response. 

After a while she lifted her face and looked at me with a smile. "What? Did you think I would start crying or anything? Don't worry I believe in you. You will definitely find a way to meet me soon." Although she said that, tears were clearly flowing out of her eyes.

"Yeah..." I replied and hugged her again.

-----

After summoning was completed, many high school students appeared. Ishtar started giving them an explanation but instead of waiting for them to understand between themselves, I used talent: remember me on them and helped them remember their memories from past simulations.

"Do you really have to go?" Aletia hugged me from behind and asked.

"Yes. I have to. This world is not my story. It's his." I said while looking at my past simulation brother, Hajime.

"I will take you to my story." I added after looking back at Aletia.

Placing a hand on her cheek, I moved my face towards her and softly kissed her. A kiss that was neither rushed nor desperate. A perfect kiss that calmed everything down.

[Simulation ends-]

[Congratulations for completing the simulation.]

[Simulation ended without your death.]

[Congratulations! You recieved SS+ rank ending.]

[You have successfully conquered your first world.]