Kirei probably had Berserker buy time and went to the Greater Grail.
"Rin, I don't think we have time for this. Kirei might do something crazy with the Greater Grail."
"But Berserker is still holding on..."
"Wait a moment."
I took out [Thunder God's Long Sword], the strongest sword in my inventory, and rushed to where Shirou and the others were fighting.
"Get back!"
When I shouted loudly to the fighting Shirou and others, they recognized my voice and quickly distanced themselves from Berserker, evading. I immediately cut Berserker in half with one strike.
Slice!
"Gwoah!"
Hit by my strike, Berserker turned to dust and disappeared. Berserker had already fought Gilgamesh and this time with Shirou and the others, consuming many of its [God Hand] abilities—twelve lives—so I could finish it in one go. I thought it would take time, but it was fortunate.
Ding~!
You have acquired the abilities [(SS) God Hand] and [(A) Mad Enhancement].
"We need to get to the Greater Grail quickly!"
Everyone hesitated for a moment when I suddenly appeared and dealt with Berserker, then urgently shouted, but soon regained their senses and followed me, moving rapidly toward the Greater Grail.
The Greater Grail visible from afar resembled Sauron's tower from The Lord of the Rings, overall a blood-like red color with giant, intestine-like structures forming the tower shape, and above it, a black sphere was floating. Moreover, an immense malice that even ordinary people could feel was spreading from the Greater Grail in all directions.
"No way! That thing is the Holy Grail... What did we fight for?"
Saber found it hard to accept that the Holy Grail she had fought so hard to obtain to fulfill her wish was something like that.
As we approached the Greater Grail, Kirei was standing in front of it. Kirei saw us arrive and said with a laugh.
"Hahaha, my victory. It's already too late."
Tohsaka Rin asked Kirei.
"What on earth did you do to the Grail!"
"What did I do? I did nothing to the Greater Grail. I just opened the path."
Kirei's words were true. The Grail was created, and due to the greed of people trying to wish upon it, they fought while restraining each other, and eventually, no one made a wish, only accumulating power in the Grail. In that situation, a youth (Avenger) who had received all sorts of curses and been offered as a tribute was summoned as a Servant, and the curses he received influenced the Grail, accepting the wish 'become all the world's evils,' becoming the corrupted Grail it is now.
Now, it was at the point where all the world's evils were waiting to be born using the Grail as a womb, so if someone used the Lesser Grail to open the Greater Grail, all the evils waiting to be born inside, the true 'Angra Mainyu,' would be born.
"Enjoy the end of the world."
With Kirei's final words, the black sphere floating above the Grail fell below it, and a loud thumping sound came from the Grail as cracks began to form. Instantly, with [Observation Haki], I saw a future where all the Shirou and others behind me would die simultaneously with the birth of Angra Mainyu. I urgently shouted.
"Everyone, grab my hand!! Now!!"
Shirou and the others, sensing the situation was turning serious, quickly grabbed my hand. I immediately teleported to Shirou's house.
"Huh, this is Shirou's house."
Everyone looked around. Since the situation was urgent, I explained briefly.
"You all saw the Grail, so you know something is trying to be born inside it, right?"
"Y-yes."
"Tokyo, no, the entire country might disappear now, so listen carefully."
I immediately took out the Thalia camping car in the yard.
"Right now, take Illya and Taiga and leave the country for the Clock Tower of the Mage's Association in England to request support from other mages."
"What?? What do you mean?"
"No time! Thalia!"
[Yes, Master.]
"Rescue mode, total 3 people: Ilyasviel von Einzbern, Fujimura Taiga, Homunculus Maid Sella. Locations: Einzbern Castle, Homurahara Academy. After rescue, move to the Clock Tower in England."
[Understood, Master.]
I pulled out a USB from the [Nano Buckle] attached to my waist and handed it to Tohsaka Rin.
"This records everything that has happened so far. Take this, and it will be easier to persuade the mages, so keep it safe."
"Ah, okay. Then what about you, Cassian?"
"I'll try to hold it off here as much as possible. I don't know if it's possible."
"No, come with us!"
I had no time to persuade, so I immediately struck Rin's neck to knock her out and put her in the camping car.
"You all, get in quickly!"
Seeing my urgent actions, everyone boarded the camping car without complaint. Then, I took out a large amount of gold ingots from my inventory and loaded them into the camping car.
"Use this if the country disappears. Rin will handle it well."
"R-right..."
I gave Thalia the signal. Then, Thalia immediately took off and flew toward nearby Homurahara Academy.
I had a reason for making this choice. Judging by the magical energy latent in the Grail, this wasn't a problem that could be easily resolved. I doubted if I could stop it even with all my strength.
Actually, it was because the amount of magical energy felt by so-called mages in the Fate worldview wasn't that great, and I wasn't without overconfidence from knowing the future. So, I always acted leisurely, but I never imagined the amount of magical energy accumulated in the Grail would be that much.
"Sigh... I'm in no position to say anything to Gilgamesh."
I immediately teleported to the location of the Greater Grail. What I saw there was a broken Grail and a giant baby about 3 meters tall crawling out of it. The baby was entirely black, oozing a black, sticky liquid all over its body, and as the liquid touched the ground, it smoked and melted the surface.
Next to it, I saw a corpse that had turned black and was rotting away, probably Kirei.
"If it was going to be like this, he should have just died alone..."
If I didn't have [Status Abnormality Immunity], it might have been dangerous. From the baby's body, malice that seemed to curse the entire world poured out.
I compressed the surrounding ground and used [Material Conversion] to make an enormous vibranium sphere, then started creating a massive energy bomb by pouring as much energy as possible into it. My total mana was nearly 2000. I poured about half, 1000 mana, into the vibranium sphere. Then, as if it reached its limit, the sphere began to vibrate and emit light.
Hummm~
"If this doesn't work, there's no other way..."
It took about 30 minutes to create the energy bomb, so I thought that with Thalia vehicle's speed, Shirou and the others had sufficiently escaped, and I immediately threw the sphere at the baby-form Angra Mainyu born from the Grail.
Whoosh!
Boom~
The sphere caused an enormous explosion the moment it touched Angra Mainyu. I immediately teleported to Shirou's house, then used the [Light-Light Fruit] ability to turn into lightning and quickly escaped from there.
KABOOOM~~~!!!!
A mushroom cloud of tremendous size and thickness formed, devastating the surrounding area. Roughly estimating, it seemed about one-third of the country was devastated, centered on Tokyo. In an instant, at least 40 million people probably died.
"This is insane. If I had handled it quickly, this wouldn't have happened..."
Then, suddenly, I felt an immense magical energy behind me.
"No way!!"
I immediately turned around and saw Angra Mainyu in an adult form, not a baby, standing and staring at me with red eyes.
"Oh no..."
Judging that if it survived such an explosion, it would be difficult to win, I was about to end the game life, but suddenly, Angra Mainyu communicated with me through will, not sound.
[I was not born to be like this.]
"..."
[You are the only one I judge capable of killing me, so I ask for help. Before I am consumed by darkness, return me to nothingness.]
I didn't know exactly what was happening, but thinking it was the only chance to resolve this situation, I immediately took out Ea from my inventory, strengthened it with [Armament Haki], and gathered [Conqueror's Haki] and all my mana. Ea hummed, swirling as if sucking in all the surrounding air, and as all the power compressed toward the tip of the weapon, I immediately launched it at Angra Mainyu.
"Enuma!!! Elish!!!"
BOOOOM~~~!!!
Angra Mainyu received my attack without any resistance. Hit by Ea's attack, Angra Mainyu decomposed and disappeared without a trace.
"Huff huff huff!"
As all my mana drained at once, an overwhelming sense of weakness came over me.
Ding~!
You have acquired the ability [(SSS) Greater Grail].
[(SS) Lesser Grail] is absorbed by [(SSS) Greater Grail].
Fortunately, this attack seemed to have definitely dealt with Angra Mainyu. But why Angra Mainyu made that choice was unknowable. It seemed like the consciousness of the cursed, suffering ordinary youth sleeping inside Angra Mainyu briefly awakened after the first attack weakened it, but this was my speculation, and I couldn't know for sure. I could only think 'I was lucky.'
I rested a bit while replenishing my mana and contacted Shirou and the others. Rin answered, sniffling.
"Cassian! You're alive. Are you hurt anywhere?"
"Yeah, fortunately, I dealt with the Grail."
Rin, knowing I was safe, got really angry.
"You, this jerk! If you knock me out like that again, I'll never see you again!!!"
"Ahaha, well, that... So, where are you?"
"I don't know. We're in the middle of the ocean. We got caught in the explosion too. It took a while to persuade Fujimura-sensei because she was in class."
"I see. I'll come there for now."
I asked Thalia camping car for its status and location information. Thalia reported that the thrusters were broken and it had crashed, but fortunately, it fell into the sea and was just floating on the water with tubes I had attached to the vehicle for emergencies.
I took out a regular Thalia vehicle, got in, moved to where the camping car was floating, teleported the people back to the country, then teleported again to retrieve the broken Thalia vehicle.
Since Tokyo had entirely disappeared, we took out a vehicle from my inventory and moved to Fukuoka, which had relatively less damage, and stayed at a hotel. The TV was noisy with news about the explosion in Tokyo every day.
For about a week, Taiga, who had survived alone leaving her students behind, and Shirou, who felt guilt over the many deaths, lived almost like invalids. As the person involved, I had [Strong Mind] and wasn't mentally affected much, which made me sorry.
In the morning, we gathered in the hotel restaurant for a meal, but Shirou still wasn't visible, seemingly due to the mental shock. At least Taiga started eating together from the previous day.
"Shirou seems to still be struggling with guilt."
"Yeah..."
As Rin and I exchanged words about Shirou, Sakura, who heard it, stood up and said.
"I'll go see him."
"Okay, please take care of Shirou."
Sakura asked the hotel to make something simple to eat and went to Shirou's room.
The next morning, when I came out of my room to have a meal, I witnessed Shirou and Sakura coming out of the same room. I pretended not to notice and went down to the restaurant.
"It's good that Shirou has loosened up a bit."
"Yeah, right."
From that day, Shirou started eating well and began diligently helping people who had lost their homes and evacuated due to the explosion's aftermath. It seemed Sakura persuaded him well to cheer up.
After being here for over half a month, someone from the Mage's Association came. That person was 'Bazett Fraga McRemitz.' We honestly told them about what had happened.
"I see. Then, Tohsaka Rin, can you go to the Clock Tower and testify?"
"I'll do that."
"Then, see you at the Clock Tower."
Bazett left like that. It seemed persuaded well, but since there were many crazies at the Clock Tower, I used [Sha Naqba Imuru (Clairvoyance)] to read Rin's future and thoroughly instructed her on how to speak to benefit her and when to present the evidence video.
"I understand."
"And, I'd like Saber to go along this time. It's your hometown. It might be good to see your changed homeland at least once."
"Hmm... I see. Okay."
Shirou said he was too busy to go, so with Shirou's permission, I used [Rule Breaker] on Saber and then contracted with her again. Then, on the back of my hand, behind the command spell I had with Rider, a new command spell from contracting with Saber appeared. This was a measure because Shirou's magecraft proficiency wasn't high yet and in case something happened in England.
"Well then, I'll be back."
"Take care. Big sister~"
Sakura and Shirou, along with Rider and Taiga, waved at the airport.
"Bring back souvenirs when you come~"
"Sure."
We arrived at the Clock Tower in England and testified at the Mage's Association. Fortunately, things went as prepared, and there were no major issues, but when the events from the Holy Grail War were revealed in the video, the Mage's Association began publicly condemning the Holy Church using Kirei's atrocities as a pretext.
The Holy Church side initially protested, but when the video was shared, they couldn't say much. Eventually, the higher-ups had some meeting, and it was concluded that the Holy Church would take responsibility to help the country and prohibit creating the Grail in the future.
We kept going back and forth, attending as witnesses and giving opinions, living busily until we were finally released. Rin was exhausted.
"Ah~ I'm tired..."
"It's over now. Let's enjoy some tourism in England from tomorrow."
"Yeah, let's do that."
We rested fully and from the next day, enjoyed touring England.
At lunchtime, we stopped at a restaurant for lunch. Saber ate deliciously and proudly told us.
"As expected! The descendants of Britain. To make such delicious food."
"Saber... that's Italian cuisine..."
"What? Then what about British food?"
At the next meal, we went to a traditional British cuisine restaurant. Saber ate that food and came out with a very disappointed face. The next British restaurant was the same.
"Why! British food has no taste? This is a problem! Did the descendants of Britain not pay attention to cooking?"
"Well, Britain is an island country, so the crops that grow are limited, and cuisine couldn't develop. Ah~ politics played a part too."
"I can't accept it! The descendants of Britain were making this and calling it cuisine... I would use the Grail to... ah... it's gone now..."
Saber was very serious about food, but British cuisine was unavoidable. Saber mumbled all day with a gloomy face.
"Ugh... the descendants of Britain... cuisine... damn... fish and chips..."
Still, from the next day, we toured sightseeing spots and enjoyed sightseeing. Then suddenly, Saber said to me.
"Cassian! I've gained enlightenment! There are no borders in cuisine! Hahaha."
"W-well..."
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