[Warning themes of implied Suicide]

Subaru and Beatrice were just chilling together under a tree

Subaru would pet Beako hair and Beako appreciated the touch

Then a single thought crossed Subarus mind that would change the fate of the world

"Hey Beako, do you mind if I ask you a question?"

Subaru asked

"I suppose Betty will answer whatever simple question her contractor has for her, even if it interrupts her relaxing time."

Subaru ruffled Beatrice's hair a little harder

"Heh your the best, anyways your a spirit right?"

"…Yes Betty is a spirit, a great spirit of Yin if you must be remained."

Subaru stopped his head petting

"Yeah I know it's just… what are you made of?"

Beatrice looked at Subaru with a bored look

"Mana."

"I know but… look at you, you have healthy human skin yet your supposed to be made entirely of pure mana."

Beatrice continued to stare at Subaru with a bored expression

"Betty's mother moulded her into a perfect spirit, and healthy skin was part of her idea of perfect."

Subaru put a finger on Beatrice's fore head

"But if your moulded from pure mana, shouldn't your body be the same colour as mana, I mean if not your body would just be one simple colour to represent whatever element was used to create you."

Beatrice had a irritated expression now

"Mother was more than skilled enough to give her more than one colour."

"Ok… how about this, Beatrice how are you able to sit on my lap, with a tangible body, with real weight and mass?"

"Betty doesn't understand what your trying to say."

"…mana is basically pure energy correct?"

"Betty guesses so."

"And that means your molecules would always be moving really quickly since there made of pure energy."

"Mole-e-culs?"

"And if your made of pure energy that would mean it's impossible for you to sit on my lap since you would just be flying through the air constantly."

"Betty doesn't understand what these mole-e-culs are or how you made that connection."

"Ok what I'm trying to say is… are you made from a type of spirit flesh or a being of pure energy?"

"What? Betty is a being of pure mana, pure energy."

"If that's the case it should be impossible for you to be sitting on me right now."

"Betty…Betty…"

Beatrice looked at her hands

"What is Betty?"

Beatrice stood up

"Excuse Betty… I must check something."

"Ok Beako."

Beatrice than ran off

"Wonder what she's doing?"

1 day later

Subaru woke up by himself

"Huh odd, Beako usually sleeps next to me."

Subaru put on a change of clothes

"Better go find her."

So Subaru went looking through the mansion until he came upon Roswaals library

"Oh there you are… Beako are you ok."

Subaru noticed quickly that Beatrice was surrounded by a pile of books, a single melted candle and a blanket covering herself.

"There's no answer I suppose."

Beatrice softly spoke

"Pardon Beako?"

"…I said there's no answer I suppose."

Subaru approached Beatrice noticing how her eyes where somehow blood shot with huge bangs under them.

"Beako what have you done, it's only been one night?"

Beatrice looked back to one of the books she was reading.

"I have been searching for answers I suppose."

"Answers… are talking about the spirit flesh thing?"

Subaru asked

"DON'T SAY SPIRIT FLESH I SUPPOSE!"

Beatrice suddenly yelled

"Woah Beako, you should really get some rest you look Umm, a bit tired."

"…Betty doesn't need sleep, I need answers… but these books are all useless I suppose."

Beatrice looked at Subaru

"Subaru… if I get cut, I don't bleed blood. I leak pure mana… but if my entire body is composed of nothing but mana than why do I have this weight and colour."

"B-Beako… starting to get a little dark."

"Subaru… if I died I would leave behind some clothes… but my body itself would become nothing but a weightless light show. I am empty, yet I feel, I am weightless yet I am heavy and I am bleak yet I possess many colours. You don't understand how this feels, knowing that while if you died a real body would be left behind, but when I go… nothing poof completely gone."

Subaru was honestly shocked his Beako would say such things, but she wasn't done yet

"Subaru you asked me if I'm made of spirit flesh or pure mana, well it's both. It's impossibly both. But how can it be both, why am I something and nothing at the same time! It isn't fair I suppose it simply isn't fair!"

Beatrice collapsed in her pile of books

Subaru seeing this took the opportunity to move closer to comfort her

"Beako… please don't think about this too deeply."

Beatrice looked at Subaru with a displeased expression

"Your not the one who will be haunted by this question for eons to come I suppose."

"…Beatrice."

Subaru used Beatrice's actual name with full seriousness

"Not every question needs to be answered. Not every problem needs to be solved. Not everything goes your way in life. But you know what? That's fine, you just need ask yourself does it matter to a great spirit like yourself?"

"…yes."

"Pardon?"

"Subaru… this question dispute originally not interesting me very much, had become my most challenging question in my existence. And I will find the answer to this one day."

"Ahh fu-"

300 years later

Beatrice stood alone

She looked at her arms

"…Flesh… or pure?"

500 years later

Beatrice still questioned to herself what she was

1000 years later

Beatrice continued on

3000 years later

And on

5000 years later

And on

.

.

.

Until

10000 years later

Beatrice now stood as one of the few remaining creatures left alive on this planet

Once almost all the natural resources had ran out all the humans died slowly be it from starvation, dehydration or because they slaughtered themselves in a barbaric attempt to survive.

Emilia and with her the entire eleven race had died a long time ago, it all happened so quickly too. Only a year after Subaru peacefully died of old age surrounded by all his loved ones, a assassin sent by Gusteko killed her.

Demi humans while lasting a little longer also succumbed to the lack of food and water in a similar way to the humans.

And yes every party involved used 'any' method to survive

All who remained now was Reinhard, a few great spirits and the .wîṯčhß.,.

And as one of the few remaining individuals left alive Beatrice had all the time in the world to reflect

"…flesh…energy…flesh…energy."

Beatrice then stopped

"…I…I can't take this anymore. Here I am, all alone, Betty's contractor dead, Puck killed by that red haired man and THE ONE QUESTION IVE BEEN ASKING FOR THOUSANDS UPON THOUSANDS OF YEARS… remains unsolved."

Beatrice looked around her still seeing nobody

"I'm alone… nobody left… all I have now is that one question… but I can't take it anymore… I don't want to…"

Beatrice walked to the edge of the world

"… Betty… I want this to stop."

Beatrice felt tears fall down her cheeks falling into the dry grounds

"No more questions… no more lonely ness. Subaru… mother… Puck… see you soon."

[This was a more serious chapter of Re:Spook. I apologise if the ending was too much for you]