As the Group continued, Ritsuka meet his another girlfriend who became jealous of Artoria caster, and she is Kama. But upon Seeing Ritsuka close to her like lover, she forgot everything and told him her plan.

In the basement of an island in the Caribbean Sea that had turned into a singularity, the Chaldea group found a huge piece of amber before their eyes. There, the parents of Ste-kun, the dinosaur that Da Vinci had found and raised, lay sleeping as fossils. There was a small depression in the amber, large enough for a small baby dinosaur to fit inside.He cried out in distress, wanting to return to his parents.The Holy Grail was about to grant that wish and was also the cause of the singularity. Yes, Ste-kun was the Holy Grail of this singularity. Da Vinci, who had raised him, held back her tears and approached Kohaku to return Ste-kun to his parents. However, Two shadows were operating in the Caribbean, trying to stop this from happening. They were the beautiful carnivorous beast DOUMAN (pronounced perfectly) who looked exactly like Chaldea's servant Ashiya Douman (it was definitely him), and Christopher Columbus in his childhood form. They were mass-producing Columbuses and planning to capture Ste and keep him alive, even to cultivate and breed him.

"DOUMAN!"

"Understood!"

At Christopher's call, DOUMAN began to cast a spell. At the same time, Ritsuka shouted a password for help.

"I love you, Kama!"

"It doesn't have a heart mark on it, but we'll go with it. So, I won't let it go."

DOUMAN was about to activate his magic at Christopher's command, but it was interrupted by Karma, a Chaldea Servant who had been hidden nearby. And her face is happy upon hearing Ritsuka words.

"Hmmmm, no, no, it would be a shame to end it so soon. Well, there's no other way! Let's take emergency measures!"

DOUMAN shouted and immediately performed a spell on Christopher. Seeing this, the boy's cheeks twitched and he glared at the onmyouji.

" DOUMAN! Are you betraying me!?"

"Hmm, hmmmm! Let's get revenge for the excessive work we've caused you with this!"

Just as everyone in Chaldea was thinking that this was a predictable betrayal, the mass-produced Columbuses around Christopher began to converge on him. As he absorbed the mass of mass-produced Columbuses, his appearance began to change.

"Damn you, DOUMAN! I'll definitely get my revenge on you later! I will crush you like a EGG"

What emerged was a gigantic egg with a terrifyingly smiling human face painted on its surface. It was the most bizarre thing that had ever happened.

"If that's how it is, I'll crush you all like this! Prepare yourself!"

Christopher's voice could be heard leaking out from the giant egg, and the egg began to laugh even more. It was strange, but it was emitting an amount of magical power comparable to that of a Servant.

"Oh come on! I'll capture DOMAN myself! I'll leave Christopher to you!"

Kama restrained DOMAN with her magic and pointed her right palm at Ritsuka. Furthermore, Anastasia took a position in front of the dinosaur amber, filling the area with cold air.

"Master, please concentrate on the battle. We will protect that amber, the treasure, with our lives. Is that okay? Charlotte, Nagiko, Mandricardo."

The three nodded resolutely, ready to defend the amber. Ritsuka steeled himself for the battle ahead, knowing that the fate of Ste-kun and the resolution of the singularity depended on their success.

"Yes! Understood!"

"...Yeah! Let's do it!"

"Got it! We'll do it!"

Following Anastasia, Charlotte, Sei Shonagon, and Mandricardo stood in a line, strengthening the amber's defense.

"That means Okita Alter, Blackbeard, and Caenis will be the forwards. We'll attack, attack, and attack. That's great!"

"Okay! Let's attack with all our might!"

Achilles shouted while already running towards the giant egg, and Blackbeard followed suit and charged in. Seeing this, Ritsuka turned his gaze to Artoria, who was standing behind him.

"Artoria! Achilles and Blackbeard, activate your first skill on yourselves! And use your second skill on yourself!"

"Y-Yes! Get ready now..."

As Ritsuka instructed, Artoria's skill strengthened the attacking power of the two front liners and herself.

Her power, specialized in supporting her own troops, also allowed her to easily guide the activation of her Noble Phantasm.

It was Ritsuka's role as her Master to time the activation..

And so, Achilles and Blackbeard kicked through the egg with great force.

The egg shook and cracked in the shell.

"Damn it! It's a mass-produced Columbus!"

As the voice resounded from the egg again, the unabsorbed mass-produced Columbuses attacked Achilles and the others.

Seeing this, Ritsuka turned to Okita Alter and pointed at Columbus and the others.

"You two, take care of them!"

"Understood! Let's go, Purgatory!"

"Leave it to me, Master!"

Okita Alter's slashes fell on the mass-produced Columbuses.

They were cut in all directions and the group of mass-produced Columbuses was blown away.

There was no way for them to get in the way.

Achilles and Blackbeard grinned and kicked the egg down further.

"Okay, Artoria, activate your third skill and attack the egg!"

"Yes! Let's go, hand-to-hand combat!"

With a skill that nullifies attacks against herself and increases her own striking power for a few moments, Artoria challenged the egg to hand-to-hand combat.

With attacks from the two Riders and Caster, the egg was on the defensive. Taking advantage of that opportunity, Ritsuka turned to Mash and Caenis and raised his right hand.

"I command you with two strokes of the Command Spell! Mash! Caenis! Activate your Noble Phantasms!"

The crest on Ritsuka's right hand emitted a crimson glow, and the magical power needed to activate Mash and Caenis' Noble Phantasms was instantly charged. At the same time, their shields and spears were filled with great power.

"Let's go! Now it's just a fragile castle of dreams. Mold Camelot!"

"All right! Dash, my sea-colored fangs! Sea Serpent Storm Blue!"

Mash's shield and Caenis' spear simultaneously emitted a glow.

The giant human-faced egg (Christopher) desperately attacked the approaching Caenis, but was unable to penetrate Mash's shield.

Caenis' Noble Phantasm pierced the egg, shattering the first layer.

Meanwhile, Artoria's magical power had increased to the point where she could use her Noble Phantasm.

"Okay, Artoria! Noble Phantasm!"

"Yes! ...That is the star of a harbinger of what will come someday. A land of hope, a remnant of paradise. You will shade the star without needing to be called by anyone. For whom is your destiny... The star of hope that holds you. Around Caliburn!"

Artoria's Staff of Selection radiated a dazzling light. Her and Da Vinci's attack power increased, any curses binding the Servants were erased, and they were given the divine protection of Anti-Purge Defense, shielding them from all pain.

"This is the finishing blow! I command with my Command Spell! Use your Noble Phantasm, Da Vinci-chan!"

"Got it! Let me show you my new invention!"

Receiving Ritsuka's Command Spell, Da Vinci sprinted off. Seeing this, Christopher and the egg's smiles deepened even more. To be honest, it was strangely scary.

"Haha! DOUMAN told me about that ultra-invincible Noble Phantasm! But it can only defend against it once, right!?"

Along with Christopher's scream of joy, intense bullets of light rained down on Da Vinci, who was approaching to unleash her Noble Phantasm. Not once, but twice, three times. However, Da Vinci was not harmed. Artoria Caster's Anti-Purge Defense repelled them all.

"Huh? Wh-why? That's not what we agreed on."

"The effect of the Mystical Tribute, 'One Who Wishes for Salvation', grants the target three times the effect of Artoria's Noble Phantasm, Anti-Purge Defense."

With a fearless smile, Fujimaru Ritsuka held up a magical outfit depicting a single priest, the effects of which had been bestowed upon Artoria from the start of the battle.

"What?! That's cheating?!"

"This time it's up to you! The journey of adventure, the voyage into the unknown, an unforgettable summer vacation, a chalky dream. Dinosaur Summer Goodbye!"

The bullet from Da Vinci's gun hit the center of the egg without missing its target. That sharp blow completely destroyed DOMAN's magic, and Christopher's ambitions were thwarted.

Thus, the battle ended, and Ste was returned to his parents. The amber returned to its original form, and the singularity that had appeared in the Caribbean Sea was resolved by Chaldea. Da Vinci and Christopher, who had lost Ste, sat side by side on the beach, looking out at the sea with dejection.

Everyone exchanged glances, deciding to leave them alone, and the Chaldea group began packing up, leaving the singularity that night. Once everyone had finished packing up, Ritsuka, who didn't have anything in particular to do, was given some free time by Goldolf. Since he had come all the way to the Caribbean, Ritsuka got permission to take a walk around the port town.

The boy changed from his formal attire, damaged in the battle with Columbus, into his usual Chaldea uniform and set out for a Caribbean port at dusk.

Then Ritsuka went to walk (date) with Anastasia, Charlotte, and Kama separate with them. Later he went to town with Artoria Caster after enjoying time with his servants' (girlfriends)

Ritsuka looked around the town, bustling with people finishing work and shoppers, with amusement. Beside the boy was Artoria Caster. Her clothes had also been worn down from the battle, and she was now dressed in her usual attire: a cobalt hat and cloak, a pure white jacket, and skirt.

Whenever the two of them found something unusual in the rows of shops, they would approach it and pick it up, spending their final hours of the singularity peacefully.

"Soon we will have to say goodbye to this singularity. I feel kind of sad."

"Me too. The microsingularity is always full of mishaps and difficulties, but when it ends, I feel sad."

"Yes... this is the last time I will walk through this city like this..."

As they walked through the town, Artoria muttered to herself, and Ritsuka nodded in agreement. This time had been full of hardships, but in the end, it had been enjoyable. Perhaps this period, where they could forget about the arduous journey of restoring human order, was unexpectedly valuable, both to him and to Chaldea. With these thoughts in mind, Ritsuka continued along the cobblestone streets of the port town.

"Ri... Ritsuka."

A voice suddenly called out from behind him, and Ritsuka turned around to see Artoria struggling as if she had something difficult to say.

"Artoria? What's wrong?"

Ritsuka tilted his head and asked. Artoria remained silent for a moment, then timidly broached her question.

"Um... Ritsuka... do you remember? The eleventh day of Fairyland..."

It was an important day for Artoria.

"It was the first time in my life that I walked down a main street with someone I loved."

As she strolled through the Caribbean port town, Artoria recalled that day and truly wanted to ask Ritsuka about it.

"I hoped you would remember, even if you didn't have to feel the same way I did. If you don't remember, it might take me a while to recover."

She asked, hoping the question would linger in his mind.

"Yes, of course. That day, too, I walked through the streets of Gloucester with you. It's one of my fondest memories from my time in Fairyland."

Ritsuka smiled gently and answered Artoria. The fairy's eyes widened briefly upon hearing that before breaking into a broad smile.

"I'm glad... I'm really glad. That day is a very precious memory to me too. I'm so glad you remembered..."

Artoria spoke wistfully, and Ritsuka's smile deepened. He had many challenging memories from his time in Fairyland, but the streets of Gloucester, walked with Artoria, were genuinely cherished.

"Of course I remember. It was the day I walked through town with a lovely fairy like Artoria for the first time in my life."

Ritsuka spoke calmly, recalling the enjoyable day they had shared. To him, it was simply a statement of his feelings. However, upon hearing it, Artoria began to feel flustered. Her steps halted, and she started to sway uncertainly.

'Is this the first time in your life? The first time for you? A lovely fairy... who? Does that mean I'm a beautiful fairy? M-me? Walking around town together? Maybe... do you feel the same way as I do?'

Artoria's face flushed with emotions and thoughts that surged over her like a raging wave, causing her to freeze on the spot. Unaware of this, Ritsuka continued walking, lost in reminiscence.

"That was tough back there, huh... Huh?"

Finally noticing Artoria's absence, Ritsuka looked around and spotted the fairy of paradise standing frozen in the middle of the road, her face red and tears welling up.

"Eh!? W-What's wrong, Artoria?"

Ritsuka hurried over to Artoria, concerned and unaware of his part in her distress. Just then, a group of patrons emerged from a nearby bar. The crowd behind and ahead of them merged, threatening to sweep them away.

"Wow, there are so many people... Artoria, give me your hand."

Ritsuka extended his right hand to Artoria amidst the crowd's flow.

"Y-Yes."

Artoria snapped out of her daze as the crowd surged around them. Against the stream of people, she managed to grasp Ritsuka's hand with her left.

Ritsuka gently clasped Artoria's hand firmly, guiding them through the crowd towards the front of a shop in the shopping district. Despite the heat and the press of bodies, Ritsuka maneuvered skillfully.

Next, he helped Artoria out of the crowd, holding her hand securely.

"You held your own back there. Are you alright, Artoria?"

Ritsuka wiped his forehead with his free hand, but Artoria remained silent. The fairy of paradise gazed down, her eyes fixed on the cobblestones.

Is she feeling unwell? Ritsuka wondered, then realized his right hand was still holding her left.

"S-Sorry! I didn't realize I was still holding your hand."

Ritsuka gave an apologetic smile and released Artoria's hand. In response, she tightened her grip on his hand.

"Eh? Ah, Artoria?"

"...Is it no good if things stay like this?"

Artoria spoke softly, her eyes still lowered. Though obscured by her hair, her cheeks were tinged with a faint crimson.

Meanwhile, Ritsuka was unsure how to respond to Artoria's question, feeling a mixture of anxiety and confusion.

"...We might get separated again... So I want to protect you... I want to hold your hand..."

As the fairy of paradise spoke, she glanced up at him. Illuminated by the setting sun, she looked almost ethereal, as if she might disappear if he didn't answer. After some hesitation, Ritsuka managed to nod gently and squeezed Artoria's hand.

"Umm, then, shall we continue?"

With a shy smile, Ritsuka suggested, and Artoria nodded eagerly. Together, they began to walk slowly, hand in hand.

Even though they were walking, it seemed like Ritsuka was supporting Artoria, who appeared dizzy and on the verge of collapsing.

Normally, Ritsuka would have been worried about Artoria, but he was so distracted that he couldn't even look back.

"Hey, are those two okay? They can barely walk straight."

"But we can't just leave them."

"No, we shouldn't interfere. I'm just worried sick watching them."

"Well, if it comes down to it, I'll go help them, even if they resent me. You're quite compassionate, though."

"...Tch, enough."

Unbeknownst to them, the voices of two Singularity Security Guards echoed nearby, but the two were oblivious, preoccupied with awkwardly navigating the city. Later, Artoria's pace suddenly slowed even further.

Noticing this, Ritsuka turned around as Artoria seemed to have calmed down a bit. She was now examining items displayed at a stall.

"Did you find something, Artoria? Is it a hair accessory?"

"Yes... I found it very beautiful... It reminded me of a hair accessory I've always wanted."

As she spoke, a hint of sadness shimmered in Artoria's eyes. Ritsuka didn't understand the cause but felt a desire to comfort her.

"...If there's any accessory you like here, why don't I buy it for you? There's no need to hesitate."

The answer Ritsuka provided after pondering was simple, disappointing himself, yet he offered his warmest smile. However, the sadness lingered in Artoria's eyes. She shook her head, smiling with a sense of resignation.

"No, it's alright. The hair accessory I truly want is no longer available. Nothing... can replace it."

Though Artoria's tone was gentle, a sense of detachment was evident. Feeling a profound, intangible presence he couldn't reach, Ritsuka felt a faint ache in his chest. It was a pain that wouldn't dissipate, one that would stay with him forever.

The bitterness and painful.

"I-I've made things awkward. I'm sorry, Ritsuka. Let's continue exploring the town! We don't have much time."

Artoria flashed a slightly forced smile and tugged Ritsuka's hand eagerly, as if trying to shake off her memories. Reluctant to leave her behind, Ritsuka followed her lead. Suddenly, he looked up at the sky. A gentle shadow fell over the picturesque Caribbean sunset.