Reincarnation in DxD with wishes

One year later...

I'm 10 years old at the moment, and knowing there are still 8 years left until Canon is bothering me, but it doesn't matter, I'm sure Canon will be more fun in the end.

It's been a year since Akeno and Valerie joined my peerage. I taught Akeno how to use his lightning more efficiently and helped Valerie master soul magic. Now, if someone dies, it's a simple matter to resurrect them; I taught her soul magic and then told her to use it through Sephiroth Grail. And guess what happened? The three-second rule isn't necessary for her; there's still time for her to perform more advanced spells.

After all this time, it's time to introduce someone else to my peers.

After getting permission from my father, I set out on my journey.

I'm thinking of adding Tiamat to my peerage; after all, she's at the Maou level, and I'm sure she'll attack me on sight.

Anyway, I'm looking for the cave where Tiamat sleeps, and after finding it, I take a look inside. It's very dark and has a disturbing atmosphere inside.

As soon as I enter the cave, I see Tiamat.

Tiamat looks uncomfortable and gives me a nasty look, then starts talking to me.

Tiamat: What do you want, devil, how dare you disturb my sleep?

Theo: I've come to make a deal with you if you accept.

Tiamat still looks disdainful.

Tiamat: Oh, so you're offering a deal, what do you offer in return?

Theo thinks he has caught her.

Theo: Let's duel. If I win, you will join my peers, but if I lose, I'll give you Ddraig in return. I know you don't like him.

Tiamat is surprised by this offer.

Tiamat: Accepting is not impossible, but how will you get Ddraig out of Loginus?

Theo: You see, I have a few tricks up my sleeve.

Tiamat: Okay, I accept.

Theo: Okay, then you start. And don't underestimate me, or you'll regret it.

Tiamat: Oh, devils, you've become so bold all of a sudden. Okay, then.

Tiamat turns into human form and immediately sends a sphere filled with chaotic energy towards me.

Theo freezes the sphere in place using time manipulation, leaving Tiamat astonished.

Theo laughs at Tiamat's condition.

Theo: You look like you've swallowed your tongue.

Tiamat starts yelling in anger.

Tiamat: Shut up, devils!

Theo's expression changes upon hearing this.

Theo: Oh, now that you've made the first move, it's my turn. I'll use a move I've never used before.

Then Theo clasps his hands together; Tiamat is surprised by this sight.

Tiamat: Since when do devils pray?

Theo ignores her and concentrates on his prayer. Then a figure of Buddhas appears, created by combining all of Theo's energies, emitting a terrifying aura.

100-Type Guanyin Bodhisattva.

And yes, this version is even more powerful.

When Tiamat sees this, she feels an instinctual fear; she can almost feel death's breath on her neck. Theo: I hope you're ready for this.

Then Theo makes his move.

100-Type Guanyin Bodhisattva first hand.

The Buddha's hand descends from above towards Tiamat. Tiamat tries to block it with her hands, and when the move finishes, Tiamat is slightly battered. Finally, Tiamat stops underestimating and starts smiling.

Tiamat: After all this time, you're the one who's pushing me the hardest.

Theo's face remains serious; he is fully focused on his prayer. This time, Tiamat charges towards Theo, intending to punch him. But Theo quickly clasps his hands together again.

100-Type Guanyin Bodhisattva third hand.

Both hands of the two Buddhas rise into the air simultaneously and strike towards Tiamat. Although Tiamat manages to block the move, she's still taken aback by the Buddha's strange attack.

Tiamat is covered in wounds, but before she can recover, Theo returns to his prayer position. Buddha raises his right hand like a slap and moves towards Tiamat, catching her off guard. Tiamat is hit, and she's thrown out of the cave.

Tiamat is angry; she realizes she's going to lose, but she's about to unleash her fury.

Tiamat gathers all her energy and creates a spear made of chaotic elements.

She charges towards Theo with the spear; this time, Theo doesn't make a move. He wants to see what Tiamat will do, and just before one second passes, Tiamat appears in front of Theo. She planned to hit him with the spear, but Theo quickly counterattacks by sending lightning from his hand. At that moment, Theo appears behind Tiamat.

Chidori!

The lightning hits Tiamat's head, sending her flying.

Theo realizes that Tiamat won't give up, so he decides to use his final move.

Theo starts to rise, assuming a strange prayer position. Buddha appears again.

100-Type Guanyin Bodhisattva 99 hand.

All the Buddha's hands start striking Tiamat at once. Tiamat can't withstand the attack; when it finishes, she lies on the ground, broken. Theo goes to her and speaks with a smile.

Theo: I guess I won.

Tiamat: I didn't expect you to be this powerful. I couldn't even touch you.

Theo: Even if you wanted to, you wouldn't have been able to. I hope you'll keep your word.

Theo heals her wounds, and Tiamat regains consciousness, standing up. Then she bites Theo's shoulder.

Tiamat: From now on, you're marked. You're mine.

Theo is very surprised by this; he knows what this gesture means. Now he has to marry Tiamat. Theo decides to talk about this later and takes out the Bishop piece, pushing it into Tiamat.

Theo: Welcome to the family.

(If you want more chapters, don't forget to send power stones and leave a comment.)