Reincarnation in DxD with wishes

1 year has passed, and here I am, now 5 years old.

My "Limitless" technique is now active 24/7 with minimal energy consumption. This technique has elevated my energy manipulation to its highest level and has enabled me to better understand space-time. After deciding to learn a breakthrough for a long time, I entered my mind palace and found what I was looking for: "Material Creation" from "Tensura." However, instead of "Magicule," it will use demonic energy, and most of what I create consumes too much energy, so it's not suitable for use during battles for now, and I don't currently need it. I'm following the instructions.

I started using it 10 days later, and now my plan can begin. First, it might be good to use half of my energy for heavy clothing, starting with 200 kg.

"Don't look at me like that. After all, I have peak ultimate-class energy reserves. My body is already at a low-medium demon level, no different from the clothes I normally wear, and I collapse on my knees as soon as I put them on. I need to get used to this because I plan to increase it even more as I get used to it.

The time has come, and I'm going to my father.

Zeoticus: "So, my son, what do I owe this honor to?" He says this with a slight smirk.

Theo: "Dad, I'm bored. I want to train myself. Can you help me?" I ask with a tearful puppy face.

Zeoticus: "It's not impossible. So, what do you want to train, and how can I help you?"

Theo: "If possible, I just want a training area that belongs to me."

Zeoticus: "Okay, I can help with that, but do you trust yourself to train? Magic is dangerous; if you make a wrong move, you could hurt yourself."

Theo: "I won't deal with magic, dad. I'll just train my body."

Zeoticus: "Okay, then wait until you're 7 years old, and then we'll teach you the power of destruction with Rias. Until then, do whatever you want."

Theo: "Thank you, Dad."

The next day, I finally created a training suit using my magic. Despite the difficulty, I do my best. I do the Saitama exercise, and my body starts to get used to it a little. This lasts for an hour. After a short break, I try to copy Netero's training.

I offer my thanks to God every time I throw a punch, and yes, I can say it hurts a lot, but I need to get used to it because I plan to increase it even more as I get used to it.

I go straight to the bathroom to take a shower.

1 month later, yes, I can say that I've improved. Pushing my muscles to their limits every day works. Thinking that I've gotten used to my training clothes, I put on heavier ones, and yes, we're back to square one.

another 1 month, now, every time I offer my thanks, it hurts less, definitely incomparable to the beginning, and the time for punching decreases slowly, down to 5 hours. My progress is fast, all thanks to essence because my potential is limitless. Now, I can focus on more than just training my energy manipulation in my room.

10 months later.....

yes, the weights I wear are not to be underestimated, it's 5 tons. Netero's training, which lasted 6 hours in the beginning, has now decreased to 1 hour, and I do the Saitama exercise but multiplied by 10, I can comfortably say that my body is at a medium-high demon level. My progress is very fast. Now, I think it's time to add new martial arts to my repertoire.

I enter my mind palace, and I see the martial art used by Jin Mori from the anime "God of High School." Yes, you got it right, I think "Renewal Taekwondo" will be very helpful.