Four years ago in DxD, five for Drako and Kuroka now that they are in the Nasuverse, Drako used the first Noble Phantasm he had obtained from the Gacha.

Back then, the Noble Phantasm was barely enough to kill a six-winged Fallen Angel, a Tier 3.

Back then, Drako was just a Nephilim Dragon. Adding all his stats together was barely over four digits. The same could be said for the experience he had gained from killing that Fallen Angel.

Compared to the 190,000 he had gained from killing Diarmuid... the amount the Fallen Angel had given him now seemed ridiculous.

But Drako knew how important that amount of experience had been at that moment. It was thanks to those enemies, now nothing more than ants, that Drako had managed to get to where he was now.

From his hunts in the forest when he was reborn, the Devils he had killed when rescuing Kuroka and Shirone, the Devil and Fallen Angel who had attacked Akeno and his family, Satanael's allies when helping Tobio... all the way to the Nemean Lion, Ladon and Diarmuid.

It was thanks to all those enemies who had made it difficult for Drako at the time that Drako could now unleash such a powerful Phoebus Catastrophe.

The first Phoebus Catastrophe that Drako used had a radius of barely 10 square meters.

The Phoebus Catastrophe that Drako had just used, restricting its range to the maximum, had shattered everything around Drako within 100 square meters.

Drako hadn't used his Touki to boost his stats; he hadn't needed it.

Drako hadn't used his fire to double his stats; he hadn't needed it.

Gilles de Rais was not like Diarmuid. Drako could barely sense danger coming from him.

True, the Servant is very powerful. Still, it was not the level of danger that Diarmuid posed. Drako had to be 100% focused on fighting Lancer. However, he just had to pay attention so that Gilles wouldn't catch him off guard.

Gilles was only dangerous if he used his final form. That huge, grotesque, almost immortal monster.

But even that form posed no real danger.

Drako was a man who enjoyed fighting, and he enjoyed it even more if it was a fight to the death.

Had he enjoyed killing Caster?

Not at all.

In Drako's opinion, Gilles was a Servant who should not have been summoned in a Holy Grail War, an aberration. His Master should never have been able to summon a Servant. He was an ordinary person (with a somewhat twisted mind) with no magical knowledge at all.

Gilles was going to die, killed under Artoria's Noble Phantasm, after a long fight in which several Servants would join forces to try to finish him off in his giant monster form. Drako had simply gone ahead to take the experience undisturbed.

In case anyone is wondering...

Caster is already dead, and Drako was looking at the notifications Sage was showing him with a smile.

[35.000 experience points have been obtained]

[Due to the increased difficulty, 35.000 experience points have been obtained.]

[Because of the effects of Title Skill [Walking Egg], another 70.000 experience points were obtained.]

[The level of [Nephalem Great Dragon King] had risen from 227 to 250.]

[Nephilim Great Dragon King] has reached its MAX level.]

[Do you want to evolve?]

Drako didn't hesitate at all.

"Yes."

[[Evolving into Nephilim Dragon Monarch in 3, 2, 1...]]

Once again, Drako felt the same pain he had felt so many times before. His bones ached, a sign that his body was changing once again. His muscles were contracting violently, causing pain that was bearable for very few.

The explosion of aura was felt throughout the world, causing chaos in the mages' upper echelons. Of course, this alerted an old vampire, although he already knew this would happen due to his powers.

The old vampire breathed a sigh of relief, knowing that he had better not bother a certain dragon in the few years he would be in this universe.

[Evolution Completed]

[Reached the Dragon Monarch category]

[Congratulations, you are just a few steps away to become the strongest in your world]

[Stats Boost: +750]

[You still have 85.000 exp to use, leveling up]

[The level of [Nephilim Dragon Monarch raised from 1 to 124]]

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Drako

Race - Nephilim Dragon Monarch

Level - 124/300

HP - 1.237.000/1.237.000

MP - 1.410.000/1.410.000

STR - 6605 (23778) (11889)

END - 6185 (22266) (11133)

AGI - 7050 (25380)

MAG - 6385 (22986) (11493)

Great Dragon King: END X200 for HP, MAG X200 for MP, END X30 for HP Regen, MAG X30 for MP Regen

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When Drako pulled himself together, a confident smile rose on his face.

The aura that emanated from him was no longer that of a mere king, but the one of a true monarch.