My first action was to sink into the pile, I knew very well that if I stayed in an isolated corner, they would throw me dragon breaths. I had seen the anime, so I knew very well that even Acnologia took a while to recover from the damage Ignir had inflicted on him with his fire dragon breath. Even at that time, Ignir was not even at his peak. So I don't see myself surviving too much a combined breath of several hundred dragons.
Once in the middle of the dragon horde, I threw my Doom Blade on the neck of a random dragon. Its scales were really solid, although I couldn't finish it, I could even send it waltzing for a while. But that's nothing compared to the rest of the horde. I activated the Observation Haki, to be able to see the whole battlefield. Then I snuck into the weak mayons of the encirclement for the trenches one by one. Although this method works, unlike my surprise attacks the dragons may not have been able to prevent them, they could still see them. So because of this. Then they started the counterattack by sending me a blast. But I dodged it, I don't even need to have the observation Haki at the same level as that of Katakuri Charlotte to see their attacks coming. But I noticed something, the Haki of kings has very little or even no influence on them. It reminds me of what the Nether told me.
Flashback
Nether "Although I have nothing against your plan to become a Dragon Slayer, I prefer to warn you."
Eunice "What's the problem?"
Nether "Dragons are not that easy to kill, Acnologia has managed to call himself King of Dragons is in itself a feat worthy of being a legend. But you have to know, dragons occupy a very important place dominant in the multiverse. They have almost impenetrable scales, prodigious speed, strength, vitality. And they have practically no natural predators. Remember that what you intend to do is against this rule. "
End of flashback
Come to think of it, even dead centuries ago, the dragons of the DXD world are still very much feared. If dragons were in the One Piece world, they would be hegemony. Many of their race surely have the talent to have the Haki of kings. So it's perfectly normal that my very self-taught Haki of kings is useless. I should also think about finding a teacher.
But here I dodge and counter attack, it never ends. My Doom Blade even eventually gave in and broke. I now had to start fighting with my fists. The strength of my fists doesn't really affect the dragons. I must have used one of my assets to change the course of the fight. It took a long time for the Nether to get it, but I ended up getting it, Fusion Weapons, Thermonuclear Bombs or "H-Bombs". A nuclear bomb whose main energy comes from the fusion of light nuclei.
More powerful and more complex than a nuclear fission bomb - called the A bomb - an H bomb is divided into two stages:
* the operation of the first stage is that of an atomic plutonium bomb;
* the second stage consists of fusion fuels; it is its functioning which constitutes the thermonuclear explosion proper.
I'm going to use this bomb to fill up on nuclear power. And then I would destroy them with a breath of radiation. My plan may be reckless, but it is for my own development.
Eunice "As the Party begins."
POV of the narrator
At first there was only a blinding light. Then, a deafening noise accompanied by a terrible shock wave. After that a terrifying calm. Although only a dozen dragons died, hundreds injured, many remained.
Dragon (1) "What was it?"
Dragon (2) "This woman looked like she was blowing herself up!"
Dragon (3) "No, it was like she released something that exploded!"
Dragon (4) "It doesn't matter anymore! She's dead now."
Dragon (5) "Wait a minute! Look! In the center, there is something moving!"
At the epicenter of the explosion, a figure emerged. She was human form, but had aggressive black eyes with red pupils and blood vessels that appeared on her face. But what seemed most abnormal to her were the forms of tentacles sticking out of her back and yellow electricity coming out of her body and spreading while spanking away what was left of the earth.
If Eunice was aware of her appearance, she would have known that she looked like a Ghoul with nuclear energy coming out of her veins.
Eunice stayed there until her bloody gaze turned to the horde of dragons. She then howled in the sky before creating wings with her tentacles and flying head kiss against all the horde of dragons.
She projected a breath filled with radiation, that breath hit the dragons in full force. Some felt unbearable pain that seemed to eat away at their entire body, and then imploded in a bloodbath. Eunice continued on her bloody trail, at times blood spattered her face and she began to devour the dragons. She may become completely berserk, she is always aware that devouring them, made her stronger. And the massacre continued until the tentacles, or rather the Kagunes, developed so quickly that they embraced Eunice and transformed. Its shape then began to change and expand to become a dragon-like creature with black scales, crimson eyes and yellow energy surrounding it. She spread her wings and then massacred and devoured all the survivors.