Reincarnated As A Dragon Egg In DxD With A Fate System!

I look at the ceiling, the light is blinding me. I can't move, as my legs and arms are tied to prevent me from escaping.

Sigh...

As if I could escape with them having my dear little sister. They will experiment with her if I don't participate voluntarily.

And here I am, once again, waiting for my so-called "king" to come and experiment on me once more.

I can hear the door opening and the footsteps approaching.

"Have you got everything ready?"

"Yes, we're waiting for your orders to continue the experiment."

My "king" is here. The other is his assistant in the experiments. They're here to experiment with my body once again.

"Well, begin experiment number XXX on test subject Kuroka."

I can't see much, but I can see the needle on my "king's" assistant. How he's always going to stick it in my neck.

"Aaaaah!!!"

It hurts! It hurts so much!

"Kuroka, Kuroka. Behave yourself, will you? Or maybe I should go check on little Shirone?"

Bastard...

"If you touch my sister, I'll kill you... I'll KILL YOU!"

I feel my body convulsing, my veins are burning.

I hate this feeling. I want to die, I want to die!

Someone, I don't care who it is. A human, a devil, an angel, I don't care about the race.

Even a dragon.

Somebody save Shirone, save me.

I don't want to suffer anymore. I don't want to see my sister's sad look anymore.

"The dose is over."

"What is the result of the experiment?"

"The experiment has been... a failure."

Crash!

It looks like the "king" is angry. The experiment has failed again...

What was the experiment for in the first place?

I remember, it was to create what he calls super-devils.

I don't understand why he wants to do that, but I don't care as long as he doesn't touch my little sister.

That's why I agreed to join his peerage as a bishop. So I could protect Shirone.

"No, the experiment is not a failure. I think we're wrong about the subject we're experimenting on. We've experimented too much on this test subject, we have to start over on another subject." The assistant says to my "king."

"Yes, I agree. During the last few experiments we've barely made any progress, I think Kuroka has reached his limit."

What are they saying? You're gonna find a new test subject? You're gonna stop experimenting on me?

What a relief. I'll finally be able to live without having to endure the pain of these experiments.

I'll finally be able to spend time with my sister.

"But, who are we going to experiment on?" The adjutant asks my "king".

It's true, who's going to carry this burden now? It's all right as long as it's not Shirone...

"It's obvious we're going to get the other cat."

No.

No No No No No No

Not Shirone.

Please, anything but Shirone.

"Taking the place of the older sister when she becomes useless is the responsibility of the younger sister. Don't you think so, Kuroka?"

I'll kill him. I'll kill him.

Even if they treat me like a criminal. Even if I'm labeled a stray devil. Even if it takes me away from Shirone.

I have to kill him before they can lay a hand on Shirone.

I will kill him. I will kill him. I will kill him.

Bang!

"Nee-sama!"

"Shirone?"

What's Shirone doing here? Were you planning on using her from the start?

No!

I can't let them use her like they used me!

"A dragon!"

The "king" is screaming, but I don't understand. What do you mean, a dragon?

"Nee-sama"

Shirone has thrown herself at me, and I catch her with my arms.

And that's when I saw it. For a dragon, it's not very big, but it's still huge. I feel like a little doll next to it.

Scales black as coal.

That's what stands out most about the dragon in front of me.

I have to ask my sister since I don't understand anything that's going on.

"What's going on, Shirone?"

My sister looks at me, and then she looks at the dragon. Are her eyes glowing?

"I was in my room, waiting for you to return from your training with the king when suddenly I heard the guards start shouting: Dragon, dragon. Then, I came out of the room and saw how Draco-nii killed all the bad guys, one after the other, as he shouted..."

"Become experience for me. [Breath of Darkness.]"

Are you guys coordinated?

"Aaaaaah!"

The dragon is spitting black fire. It's killing the king?

"Tch, you are a high-class devil, but your level is lower than that of the mid-class devil. Isn't it strength that gives you status? I've worried too much. This mission is too easy."

What are you saying? Experience? Level?

Does he think he's playing a video game?

...…..

"Shirone, stay behind me!"

After killing those two twin devils, I proceeded to search for the two sisters.

To get to the next room, you had to cross a door that could only be opened with a password. I obviously didn't know the password, so I used [Dragon punch] and forced my way through.

Behind the door was a corridor with numerous rooms on either side of it. You didn't have to be very smart to guess that they were experiment rooms.

All the rooms were empty, so I kept going. I was beginning to get tired of turning around a lot of corners when I came to a fork in the road. I didn't give it much thought and chose one of the two paths immediately.

What I found at the end of the corridor were four low-class devils. They were easy to kill, just like the previous ones I had encountered.

The experience they gave me, which had previously made me climb up to level 20 easily, made me climb from level 25 to level 26.

I entered the room the devils were protecting, and, to my surprise, I found the bright eyes of a white-haired neko.

Koneko Toujou.

No.

Shirone.