Disclaimer: Dies Irae is Masada's, Touhou is ZUN's. I own nothing except my OCs. Hope you'll enjoy my story.

Chapter 1

Wolfgang Schreiber – 0 search results.

Usami Sumireko stared at the screen of her tablet. Beside her tablet was a piece of paper filled with a name.

Wolfgang Schreiber.

Woffgeng Shraiba.

Wollgaang Schraibar.

Monarch of Destruction.

Siege of Berlin.

1945.

What Happened During the Siege of Berlin.

Necromancer in Nazi Germany.

Occultism in Nazi Germany.

Youkai Eating Soul in Nazi Germany.

Only God knew how much Usami spent on searching those things. Unfortunately, the information she received from Google was either insufficient or unsatisfactory.

"Tch, not again. Come on, there must be something going on in 1945 during the Fall of Berlin!"

All she found were documentaries about Hitler's suicide, the Soviets swarming Berlin and raising the Soviet flag on the Reichstag and documentaries about World War 2.

There were also old films related to the war from Die Deutsche Woschenchau and right-wing leaning websites, but nothing of notable information that could describe her dream.

"Why can't I find anything? You could find more information about the Lunar Capital than World War 2 when those lunarians are hiding themselves and World War 2 was one of the most brutal events that happened on Earth!"

Usami Sumireko could not hide her frustration.

She opened and searched for information in any potential page, be it academic or pages filled with conspiracy theories. Still, she could not find anything but unnecessary stuff such as the Rothschild-Rockefeller conspiracy, the Apollo-Chang'e Project and space agencies hiding the true nature of the Lunar Capital.

(Calm down. Calm down. It may be a dream, but it doesn't have to be true.)

Still, there was no way she would reject her dream.

Not when weird things happened, starting from a mere 'dream' that led to her battles and endless nightmares.

Therefore, she has decided that the dream contained something valuable and she was to investigate everything.

"I see…then, there's no other option. Since it is mostly about the European theatre of World War 2, looking for reading materials would be tough. I need to resort to English books, then."

Usami Sumireko typed something on her tablet. The psychic planned to look for occult books that specifically wrote about occultism in Germany during the Nazi period.

She had downloaded and read a few books about the war from the Germans' perspective such as Von Manstein's Lost Victories - only to find nothing but criticism on Hitler's blunders.

For that, she needed to locate bookstores that specialize in occultism – in spots like Akihabara or Harajuku rather than dull places such as Chiyoda.

"Goddammit! What should I do?"

Usami Sumireko looked at the clock. It was 2 AM in the morning.

"I should be sleeping now…I still have to attend school tomorrow. I'm not Reimu…"

Usami Sumireko lazily rested her back on the wooden chair and closed her eyes.

(Wait…Reimu…)

Yes. She remembered something important – she was a psychic. She could enter Gensokyou unlike your typical average human.

Thus, to find information about the occult, the best way was to ask those who were routinely involved in the supernatural. If she was lucky, she might even be able to lobby Yakumo to help her in her quest.

(Why did I not remember about them in the first place?)

Hakurei Reimu and Kirisame Marisa.

The two incident resolvers of Gensokyou sat under the shade of the shrine as the bright sun started to illuminate the ground.

"When things are peaceful, it could be dull," Hakurei mumbled.

Kirisame Marisa nodded in agreement as she reached for a biscuit in a small plate prepared by Hakurei Reimu.

"Even so, it'd be fun if an incident pops up. At least there's something I can do to kill this seemingly eternal boredom of mine."

Hakurei rolled her eyes upon listening to Kirisame's statement.

As the two women were enjoying their simple relaxation, another voice could be heard.

"Oh, good morning!"

It was the green-haired shrine maiden.

"Oh, its you," Hakurei replied lazily.

"What a good day it is! Don't you think so?"

Kochiya Sanae greeted the two women. She seemed free, since she would be working at her shrine if she had other things to complete.

"Seems like you're quite free as well," Kirisame replied. "Well…isn't that good? There's nothing wrong with relaxing once in a while."

Kochiya chuckled and nodded.

"Ah, Kanako-sama said the same thing earlier. She told me to enjoy myself today and not be too concerned with work. I guess even gods need rest."

Hakurei, who had not spoken anything, finally spoke.

"Oh, you're here. Well, you're not wrong there. Even gods need rest. Look at me, I'm always enjoying myself here and then."

Kirisame gave a friendly jab at Hakurei.

"Oi, you're giving the gods too much rest. Along with yourself."

"And there's nothing wrong with that," Hakurei replied. "Why should I work myself to death if I get no donation…ah, hold on. My donations have been minimal this month! How am I going to survive next month?"

Kirisame and Kochiya smiled awkwardly as they listened to Hakurei's concern.

"That's why you need to be more hardworking as a shrine maiden!" Kirisame replied. "Your job is to attract people to come to the shrine and they'll donate money to you!"

Hakurei seemed dissatisfied.

"Too lazy."

"This is why you always lack money. At least you should do some blessing work to the villagers, don't you think?" Kirisame replied.

"Ah…I'm too worn out to think about anything today, so don't bother me if you're not giving me money!"

Hakurei Reimu lazily waved her hand and reached the biscuit in her plate.

As she was about to bite the biscuit, a loud voice rang in the vicinity of the shrine.

"Thank goodness!"

The three women turned their gazes to the source of the sound.

It was Usami Sumireko.

"Yoo! Thank goodness all of you are there! I need some help –"

Hakurei crossed her hands in an X formation.

"Not today! Today is off-day! I shall not entertain any request! Not that I get anything out of it besides fatigue."

Usami Sumireko furrowed her eyebrows.

"You can't be serious…hey, Marisa, Sanae, she's not serious about this, right?"

Kochiya and Kirisame did not reply.

Usami Sumireko mumbled in dissatisfaction and took out something from her skirt pocket.

It was her purse. She diligently took out 10,000 yen and inserted them into the donation box.

Hakurei, who noticed the amount of money immediately stood and walked towards Usami Sumireko with a diligent face.

"How may I be of service?"

(She's acting weird…) Sumireko thought. (Or perhaps not.)

"Can you call Yukari to come here?" Usami asked. "I really need to ask her some questions."

Hakurei scratched her head upon hearing Usami's request.

"I'm not trying to refuse, but its not easy to call her. She'll be around when you don't want her, and she'll be gone when you need her. Why do you need her anyway?"

Usami Sumireko was startled by Hakurei's random question.

"Eh? Actually, I wanted to ask her about World War 2. Well, it's a war that happened in the Outside World, so I don't expect you to know much about it, Reimu…"

This time, Kochiya Sanae interrupted.

"Eh? What about World War 2?"

"Do you know about the details of World War 2…I mean, the personal anecdotes of soldiers that fought, not academic explanation as to what happened."

Before Usami could finish her question, Kochiya interrupted.

"My grandfather served on a Kongou-class battleship as a Lieutenant Commander, so I knew some stuff about the Pacific War. He loved telling stories about the Pacific War since he fought at Midway under Admiral Yamamoto to the extent that Kanako-sama and Suwako-sama had to shut him up of his war romanticism and his self-depreciation after Japan surrendered."

Usami Sumireko remembered. Kochiya Sanae was from the Outside World like herself. She would understand the issue better than a pure Gensokyou resident such as Hakurei Reimu or Kirisame Marisa.

However, Usami felt that she had to silence Kochiya Sanae before the latter began explaining her grandfather's story any further.

(For goddesses that thrive in wars to silence him up…he must have been a true warrior of Valhalla) Usami thought. (Or a crazy fanatic. Perhaps a war criminal. Oh well, I better not say anything.)

"I see. But, no, I'm not asking about the Pacific War. I need information about the European theatre."

Kochiya paused.

The European front. The theatre that witnessed the Holocaust and end of European hegemony.

Asking about the European theater of war was a completely different thing compared to the Pacific theatre. For Japan that was primarily engaged with the United States, they weren't focused on studying the European part of war in detail.

Certainly, that was not something you could hear from Japanese veterans that served in the war.

"Anyway, I can always ask those idiots at Yasukuni shrine if I wanted to dig some stories about the Pacific. But the European war front is the one I'm investigating. Specifically, the incident happening during the Fall of Berlin. Anything like an occult army of sorts."

"The occult during the Fall of Berlin? Aren't the Reds communists?" Kochiya replied. "Its unlikely that they'd have any occult movements there. Besides, won't Stalin purge anyone that threatened his position at that time?"

Usami Sumireko thought about her dream.

The man called Wolfgang Schreiber, Sergeant Walter and the Monarch of Destruction all wore military uniforms recognizable as those from the Schutzstaffel.

Usami Sumireko had to search for Wehrmacht and SS uniforms to confirm her suspicions before she came to that conclusion.

"No, no. I mean…from the German side. Don't they have any occult movements managed under the Nazi government?"

Kochiya Sanae gave some thought. She knew nothing about any occult movement in the German military.

"You know, perhaps necromancy or Yuyuko-style soul manipulation magic?"

(I must've spoken like a fool.)

Kochiya touched her chin as she thought for a while.

"Man, necromancy is not an easy field of magic. Not many mastered that field…I mean, you get hunted by kishin if you mistakenly used necromancy," Kirisame replied.

Even so, Usami could not forget that moment. Despite it being a dream, it felt too real. She felt as if she was observing the very moment of Berlin's fall – and the rise of an unknown occult group that were masters of soul manipulation and necromancy.

"Besides, having soul manipulation at Yuyuko's level isn't easy for magicians – you'd need years of training to reach her level. Doubt that ordinary humans could accomplish such feats by themselves," Kirisame continued.

Kochiya finally spoke.

"I've never came across anything like that. People only talk about the Nazi's high tech relative to the Allied Forces."

A hint of disappointment could be seen from Usami's face.

Kirisame Marisa and Hakurei Reimu, who were left out of the conversation merely stared at the two Outsiders as they discussed historical events that never happened in Gensokyou.

Usami Sumireko exhaled fresh air.

"Is that so…"

She sounded disappointed. She thought having someone more knowledgeable such as Yakumo might be able to help her dig out the mystery of her dreams better.

"The Nazi government killed Freemasons and occultists, don't they?" Kochiya replied. "They're the complete opposite of magicians. They're mostly driven by racial eugenics…"

"Ah…the stupid racial purity thing again," Usami mumbled.

Not that she was in any position to criticize Nazi Germany's policies. Imperial Japan's policies were no different – they were killing Chinese in the name of the Divine Right to rule.

(Then…how I do look for information about World War 2? Who do I turn to? Dammit, this is tough.)

"Hello, hello!" Hakurei interrupted.

Hakurei Reimu finally spoke after listening to the long-winded discussion between Kochiya and Usami. "I need an explanation about what you guys are discussing about."

Usami and Kochiya looked at each other and sighed.

"Basically, some time ago, the world got into 2 wars – World War 1 and World War 2. The wars were so massive that many people were killed. Japan was involved and we lost the war," Usami explained.

Hakurei simply nodded while Kirisame seemed interested.

"So, you're saying that the whole Outside World just got mad and decided to kill each other for no reason?" Hakurei spoke disinterestedly. "Wow, the Outsiders can be stupid as well. Well, I guess without youkai to worry about, you guys can kill each other without having to worry about being eaten."

"Ah…" Usami and Kochiya replied. They knew that it was not as simple as Hakurei made it seem to be.

"So, is this Germany the bad guy? The instigator of the war?"

Technically, Hakurei Reimu was not wrong. Germany, under the rule of Adolf Hitler had caused the beginning of a conflict of a massive scale. Yet, it was too simplistic to pin every cause on Germany.

Besides, conflicts at such level were caused by complex and often entangled reasons.

For example, why had Britain and France forsaken the Czech but came into the aid of the Poles by declaring war on Germany? The strategy of appeasement and war was not as simple as amateurs had imagined.

Still, explaining everything to Hakurei would only confuse her further. Therefore, they decided to nod and use simple terms to explain about the war to Hakurei.

"Ah…how idiotic," Hakurei thought.

"Sounds pathetic," Kirisame replied. "But still a better war story than the Lunar-Genso war."

"But," Kochiya interrupted. "Don't you have school today?"

Usami smiled and gave out a fake laughter.

"Ah, about that…don't worry about it. I'm down with a fever, so I'm not going to school today."

Kochiya nodded. As she was about to say something in the lines of 'you should take care of your health' – a surge of unexpected memories returned to her mind.

"Aha!" the greenhead shouted. It seemed almost as if she was Archimedes and had just solved a major mystery.

"What's with you?" Hakurei mumbled. "Have you gone nuts?"

"You should look up about astrology." Kochiya spoke. "I remembered an astrologer being employed by the Nazis."

"An astrologer?" Usami thought.

The psychic never knew about astrology being practiced in Nazi Germany.

"If my memory served me well, there was an astrologer that predicted Hitler's assassination in 1939. I think he was later taken by…Gestapo and ended up working to help with the Reich's propaganda."

"An astrologer that helped in propaganda? That sounds…interesting and weird," Usami thought. "Do you perhaps…"

"Yes, I remember it!" Kochiya interrupted. "His name is Karl Ernst Krafft. Rumor has it that he's a Kabbalist too. When I was preparing my Spell Card, I looked into some details on Kabbalah and learned about him."

(Karl…Ernst Krafft?)

Usami Sumireko felt the need to write down that name. It might serve a purpose in her search to decode the mystery of her dream.

At last, Usami's visit to Gensokyou gave an important clue in her mission to decrypt her weird dream.

Usami Sumireko walked towards the donation box and inverted the box. The 10,000 yen note she inserted in the box dropped out and fell onto the ground.

Without hesitation, Usami picked it up and inserted her valuable money back into her purse.

"Hey! What are you doing?!" Hakurei shouted.

"Taking back my valuable money. Getting my refund for a nonexistent service. It's a practice in the Outside World. Right, Sanae?"

"Damn you!" Hakurei shouted. "This shrine doesn't have any refund policy! Give me back my money!"

Usami narrowed her eyebrows.

"Not happening!"

And thus, a spell card battle began.

Yakumo Yukari.

The youkai of boundaries stood still in front of a tree.

Her somber expression seemed as if she was trying to pay homage to something, or someone. This was an unseen facet of Yakumo that few knew. Perhaps, not even her shikigami were aware of it.

The proof of that was clear as the youkai stood alone without any familiar of hers.

Beside the youkai was a gardener that served the princess of the Netherworld, Saigyouji Yuyuko.

The youkai stood and closed her eyes, as if she was praying to something.

After a minute or two, the youkai opened her eyes. She turned her gaze to the gardener that stood beside her.

The gardener did not know why the youkai visited the tree known as the Saigyou Ayakashi. She knew the tree was dangerous and that her master was involved in the sealing of the tree.

But, was there any significance as to why Yakumo emphasized great importance to that tree?

"This tree contains a lot of valuable memories. It is not just the soul that it consumes – it consumes emotions and memories too."

Konpaku could not reply to Yakumo's words. To the gardener, it felt as if the youkai was talking to herself.

"Don't you want to know, Youmu?"

As the youkai spoke, she touched the trunk of the large tree using her right hand.

The gardener wasn't exactly a satori thus she could not predict what Yakumo was implying. Yet, as a sign of respect to her master's friend, she remained silent.

"About the history of this legendary tree? Truly, this is the tree that holds the foundation of the Netherworld."

"The foundation…of the Netherworld?"

Yakumo nodded slightly. Her lips curved up slightly. She gave an aura of melancholy as she spoke to the gardener.

"This tree became the witness of my first encounter with Yuyuko."

(Ah…) Konpaku thought. (This must have been a place with nostalgic values to her. And Yuyuko-sama, of course.)

"Well, well. Your master may have forgotten, but I vividly remember my first encounter with her. It was as if I met her yesterday."

Just what was the history between Yakumo Yukari and Saigyouji Yuyuko? Konpaku Youmu was curious, but she could not bring herself to ask that simple question.

Yakumo smiled gracefully and spoke as if she read the gardener's mind.

"Of course. There is no harm in telling you – or so he would say."

Konpaku seemed confused.

"He?" the gardener asked.

"Yes. A divinely talented poet, I would say. His words could attract anyone."

Without any interference, Yakumo continued her idle thought.

"This tree bore witness to the certain poet's death – and it led to events happening today."

"A certain…poet?" Konpaku asked. Yakumo nodded as she saw the gardener's reaction.

"Oh yes. A human poet. You do know that a poet died here, right?"

Konpaku knew. That was the turning point. As the poet died under the tree, the tree tasted the life of humans and since then, started to become a youkai tree.

"But, do you know about the poet that died under the tree?"

"!"

Yakumo gave a kind smile as she spoke.

"Do you know about the poet, Yukari-sama?"

The youkai of boundaries nodded.

"He called himself Suigin, the Mercury. At first, I yearned to devour him," Yakumo spoke in honesty. "He lacked the characteristic of a living human. He looked dead. His face was pale, faint and lacked vitality. He seemed like a living Buddha who completely rid himself of any desire – only seeking for eternal end."

Konpaku listened carefully to the youkai's words.

"But something stopped me from eating him. Do you know what it was?"

The gardener shook her head.

Yakumo smiled gently and spoke only two words.

Your master.

"Yuyuko-sama?"

Yakumo chuckled.

"Yes. But not directly. The poet said this: Ah, youkai. I fear not you, but I seek not to be eaten or killed by something lower than my Goddess of Death!"

Konpaku was amazed by such courage.

"Hahaha!" the youkai laughed. "He was no joke, though. My attacks meant nothing to him. It simply passed through his body, as if he was using a default Fantasy Nature spell card throughout his existence. There was nothing I could do. As if he was made of complete nothingness."

(What a weird existence) Konpaku thought.

"With that said, he did not counter my attacks to my surprise. He simply smiled – it was a smile of sorrow, as if he was looking at me with pity. His smile was different from the reactions of the arrogant Lunarians, he lacked their arrogance. Although, I wonder how they would've cope with his presence during the war."

Yakumo lowered her head.

"Then, your master came to his rescue. Although, I doubt he needs any rescuing."

Konpaku felt warmth as she heard the story of that youkai.

It was a feeling rarely conveyed by a youkai of her level.

(Then…)

Konpaku realized something.

Yakumo Yukari, her master and the poet Suigin must have been exceptionally close for that youkai to be recalling her memories in such a nostalgic manner.

"Why…"

The youkai mumbled something that the gardener could not understand.

"Why did you forsake us, you useless poet?!"

Konpaku thought she had seen something impossible.

"If you hadn't decided to die under that tree, she wouldn't have to go through all those suffering. Did you not promise to protect her, you damned poet?!"

Yakumo's eyes were no longer normal eyes. They were a pool of water. Misty eyes that were barely containing the overloading drops of tears.

"Why did you have to die, Suigin? Someone like you, who was unmistakably a master of the hermit arts – why would you give your life just like that? Because of you…"

Yakumo fell onto her knees.

"Because of you…she had to…she had to…I almost lost her because of you. If you had not chosen death and be with her any time longer, she wouldn't had to sacrifice herself to seal this cursed tree that was caused by your death!"

Konpaku Youmu was shocked by the sight before her eyes.

Never would she imagine the calculating youkai that upheld Gensokyou's laws to have such a soft spot for her master.

"I barely managed to create a spell that would seal this tree using her body, so that her soul would be around here. But how long could it last? It couldn't and wouldn't last forever, right? Even if I can control boundaries…there are certain concepts that are beyond my control, beyond my comprehension."

And Yakumo wept. And she wept. And she wept to her heart's content. As if complaining to God.

"Truly, truly, my dear friend and creation, Yakumo Yukari."

A sole man that sat on a throne spoke. He was a man with feminine looks. He had a kind, but scornful smile on his face. It wouldn't be an exaggeration to claim that he was the culmination of paradoxes being concentrated in a single man.

His surrounding could not be described with mere words, for it was somewhere not bound by space and time.

He was surrounded by bright lights that seemed like stars, but they were not stars. For he was not inside any universe. He was not bound by any dimension or concept. He was an existence that even Hourai immortals, Lunarians and the proud gods could never become.

"I have never forsaken my Goddess. Even if she's unable to remember me, I am still bound by my eternal vow to her. That I would love her forever. That I would look after her, cherish her existence and protect her with all my power."

In that sole place that no other existence could reach, the man made a declaration.

"For that sole reason, I will continue with my Grand Guignol. While that happens, I hope you shall be loyal to the Goddess, my dear friend, Yakumo Yukari."

Mount Fuji, Akigahara – Sea of Trees.

The entire area was set ablaze by crimson flames.

A torrent of sheer energy had emerged from a nearby cave, mowing down trees and setting them ablaze.

This place was a crevice in the fabric of space; a meeting point for the ley lines which spread across the Earth like a web.

A lone man emerged from the cave.

He wore a rosary and a cassock, signaling his status as a holy member of the cloth. Truly, the soft, kind smile was what one would expect from the servant of God.

Yet, could someone who emerged from such an inferno truly be treated as a servant of the divine?

And…

Kneeling before him was a woman with black hair.

Her skin color and features would indicate her as a native Japanese.

She spoke reverently, her face as expressionless as that of a statue.

"Pardon me, Valeria Trifa, Your Eminence the Divine Vessel and substitute to the Lord Commander Himself. I summoned you here out of my own volition. Do you need an introduction?"

"It is not necessary," the man replied. "I remembered you, Leonhart. You were a child when you took over Lady Kircheisen's place, but I see that you've grown to be beautiful and strong."

"I am unworthy of such praises."

As the two spoke, unpleasant moans could be heard around them.

They were likely the souls of those who took their lives in that inferno. The young woman took no heed as they continued to make their presence known; the priest, however, inhaled them all with affection effectively making them his.

A blasphemous scene, one that would enrage the Yamaxanadu.

It was identical to the events in Berlin in World War 2. Was this perhaps the continuation of that day?

Excuses were unnecessary for they were of secondary importance.

"Well then, shall we continue our holy crusade?"

That one crucial thing, and that alone. That they were preparing to unveil the world the supreme performance they have spent preparing for years.

Now then…

May the curtains of Grand Guignol rise.

Slaughter, butcher, massacre till none is left.

Violate, conquer and consecrate.

Let there be victory.

Let there be conquest.

For it was –

"It is the will of God," the woman replied. "My honor is loyalty."

And thus, the Legion that swore to destroy the known world began to move.

Unbeknownst to any.

"Tch, we were too late."

In that place that was once an inferno of hell, two silhouettes could be seen.

One of them belonged to a woman. Her silver colored hair reached her waist, while her clothing resembled that of a corporate worker.

Standing beside her was a male with beastly look. His right eye was scarred, and he wore a long coat and black pants. Underneath his coat was a red shirt.

"Longinus Dreizhen Orden. They have finally moved once again," the woman spoke in a professional manner. "Looks like there'll be a lot of problem if they continue with their actions."

"And how would a lunarian like yourself be affected by Earth's problems?" asked the man.

He then took out a cigarette and calmly ignited it using his finger.

"An idiotic brawny Hellion such as yourself may not understand, but this is a crisis that threatens all of existence. The Longinus Dreizhen Orden is a threat even to the Lunar Capital. The magic they use, Die Ewigkeit – is truly fearsome. It even interfered with the very fabric of existence. Isn't that why Hell had to send its best kishin to hunt for these scums?"

The man nodded.

"A death-fearing bitch like you may not understand, but these bastards are messing with souls and the very nature of reincarnation. We can't let them roam freely. Especially that rotten steel hearted commander of theirs."

And the woman and the man spoke the name in unison.

Reinhard Tristan Eugen Heydrich.

Thus, the two agents from two different worlds began moving.

Author's Note: Time for the curtains of Grand Guignol to rise! Leave your comments here. And perhaps your vision or suggestion about this crossover.