Inside Uruk's Ziggurat.
The Throne Room used by Gilgamesh for state affairs.
Feeling the distant tremors, Merlin opened his eyes: "Looks like the operation has begun. Then, it's time for me to hurry too. You'll be fine here alone, right, Morgan?"
"Who do you think you're talking to?" Morgan glanced at him coldly. "I really don't want to work with you a second time. It'd be better if you just died in the battle against Tiamat."
"Haha~~~ You really won't give me even a bit of face. I thought our relationship had improved a little, but it seems not." Merlin smiled. "However, I'm not ready to die yet. At the very least, I have to attend Lia's wedding ceremony first... Well, you won't be able to see it. Such a pity."
This Singularity is Morgan's final meeting with everyone. After this Singularity ends, Morgan, who has been summoned as a Servant for twenty years, will disappear, entrusting everything to her true self and returning to the Throne of Heroes.
Perhaps she won't be summoned again in the future, as she would have no reason to respond to a summoning after this.
"Then, farewell, Morgan."
"Get lost, Merlin."
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The Underworld.
This was the first time Ritsuka and Mash had come here.
All things in the Age of Gods existed on the same 'canvas.' Flying upward would reach the heavens, and digging downward would reach the Underworld—what was happening now was the literal meaning of that phrase.
Due to the impact of Ishtar's Noble Phantasm, the Sea of Chaos was completely set ablaze, and the earth shattered. As planned, Tiamat fell into the massive hole struck by Ishtar. Ritsuka and Mash, who were nearby, were immediately swept up in the impact and fell into the Underworld.
"Pitch black, can't see anything... This is the Underworld?"
"Please hold my hand, Master. We'll make an emergency landing!"
As she said that, Mash directed her shield toward the ground. However, the next moment, both their bodies suddenly felt light, like two feathers floating gently toward the nearest stone platform.
And on that platform—
"Welcome to the Underworld, Fujimaru Ritsuka, Mash."
Holding a spear, Ereshkigal smiled at the two: "This is our first official meeting. I am the mistress of the Underworld, Ereshkigal."
Seeing the Goddess before her, who was almost identical to Ishtar except for her hair and eye color, Ritsuka nodded slightly: "Nice to meet you, Goddess Ereshkigal. We'll be troubling you from now on."
"No problem, it's already agreed upon. Besides, I've temporarily granted you the right to move and exist in the Underworld—"
"Ah, that!" Ritsuka hurriedly rummaged through her pocket, pulled out two flowers, and attached them to herself and Mash: "Actually, Merlin already made us Mystic Codes that can provide a similar effect, so you don't need to sacrifice your power to grant us privileges."
"Eh? That Incubus can even do something like that?"
Ereshkigal was slightly surprised—she had wanted to show off her prowess as a Goddess, you know. How did they know her action would require sacrificing power?
But this was good too. If she didn't need to expend power, she could use more strength to fight Tiamat.
"AAAAAAaaaaaaaaaa—!!"
Tiamat's cry echoed from the depths of the Underworld. Ritsuka and Mash hurriedly went to the edge of the platform and looked down. They saw Tiamat crawling on all fours at the bottom of the Underworld, with flashes of light like lightning constantly emanating around her, continuously singing and screaming.
[Is that the Underworld's defense system? Every second, those lights deal damage equivalent to Ishtar's Noble Phantasm to Goddess Tiamat!]
Roman's voice was full of excitement. With such output, even Tiamat would suffer significant injury.
Ereshkigal came to their side: "After all, this is the Order established by this Uruk world. Though Mother came to the Underworld, she's just an ordinary God... Or so they say, but it actually doesn't affect Mother much."
"Eh? Why?"
Ritsuka couldn't help but widen her eyes. Even the Underworld's damage couldn't harm Tiamat?
Just how strong was this Goddess of Genesis!?
[Calm down, Fujimaru. Isn't everything still going according to plan so far?]
Roman reassured.
[The timing calculation should be close. The Marduk Axe dropped by Quetzalcoatl will greatly weaken Tiamat's divinity—]
"Fujimaru-dono! Mash-dono!"
At that moment, Nobunaga's voice suddenly sounded from above. Flying swiftly through the air while riding a matchlock rifle, she arrived before the three and said: "The Marduk Axe will be thrown soon. Prepare to dodge. Be careful not to get hit!"
◆━⊰✧⊱━◆
The Surface.
Right above the Underworld Gate destroyed by Ishtar.
Sitting on Vimana with a slightly pale face, Ishtar looked at Quetzalcoatl in front: "It's up to you next, Quetzalcoatl. I have absolutely no Mana left after that attack."
"Hmm, good job. Leave the rest to Onee-san!"
Quetzalcoatl said with a smile. Beside her, the Marduk Axe, over forty meters long, was now lifted and floating in the air by dozens of Pterosaurs. Quetzalcoatl's sole task was to throw this axe with full force into the Underworld Gate, delivering a heavy blow to Tiamat from absolute height.
"Alright, it's time for me to show my skills—Kids, release the binds!"
At Quetzalcoatl's command, the Pterosaurs holding the Marduk Axe released the thick hemp ropes pulling the axe. Just as the axe began to fall, she suddenly leaped, darting onto the axe in an instant!
(Just throwing it isn't enough. If I want to deal greater damage, I need to deliver the biggest impact at the start—)
Thinking so, Quetzalcoatl's entire body suddenly blazed with sun-like flames.
(That kid burned the Sea of Life with solar flames. Then, now, I'll pierce the Underworld Gate with a single solar strike!)
"Witness the great impact of South American Underworld power that annihilates many lives!"
Aiming at the Marduk Axe below, Quetzalcoatl, enveloped in heat, unleashed her Noble Phantasm with full power!
"—Xiuhcoatl!"
Falling from a thousand-meter height, the burning flames converged into one point. Quetzalcoatl's full-force strike, falling like a meteor collision, hit the Marduk Axe with a powerful kick!
*BANG!*
After a muffled collision sound, the giant axe suddenly turned into a true meteor! It struck the Underworld Gate below at full speed!
The sharp blade cleaved through the stone layers, as if slicing a gap. The Underworld Gate was even split in two by Quetzalcoatl's kicking strike!
And after falling rapidly for a few seconds, under the shocked gazes of Ritsuka and the others—
*BANNGGG!*
Like in myth, the Marduk Axe's blade heavily struck Tiamat's head!
"AAAaaaaaaaaaaaaaaaaaaa—!!"
This time, Tiamat's cry showed clear emotional fluctuations for the first time.
She felt pain.