[This has heavy OOC Moments and Rems awake.]

Subaru snickered to himself while hiding behind a closed door

Subaru had been planning today for over a week

Today he would prank all the manors residents

Subaru had planned out and knew for a fact that this fantasy world would be completely unprepared for his otherworldly pranks and jokes

'Thud Thud'

Subaru could hear the footsteps of an unfortunate victim approaching his door

"Pft."

Subaru give a small laugh at the thought of scaring whoever was walking down the hall.

Subaru continued to patiently wait for his victim to get closer

'Thud thud thud."

The footsteps were now almost right outside the door

"One...two...three."

Subaru threw open the door

"BOO"

"Eek!"

Otto screamed as he fell over

"N-Natsuki-san! Why would you-"

Subaru pointed at Otto

"You've just gotten PRANKED!"

"What's a prank?"

However, instead of answering Otto's questions Subaru just ran off

"... Natsuki...san?"

Otto was just left speechless

...

Subaru was still running away from Otto snickering to himself

Otto never saw it coming, as he expected the world was unprepared for the pranks of earth

Until he accidentally ran into Rem

The two fell over with Subaru laying on Rem

"Oof."

"S-S-Subaru-kun, this is very straightforward of you... however, Rem doesn't mind if you wish to take her here."

Rem started to blush at her fantasy

"...You know Rem I just realised something."

"What is it Subaru-kun?"

"You are an Oni with a horn."

"...Yes Rem is an Oni with a horn... why bring it up?"

Subaru smirked

"So I guess it makes sense that you would be so... Horny."

"Rems doesn't. . . Subaru-kun that was... a very clever joke."

Subaru got off Rem

"Thank you, now I'm off to say more jokes. . . after all I can't afford to just clown around all day."

"Rem agrees, Subaru-kun cannot just clown around all day."

Subaru began to walk away

"See ya, Rem."

Rem waved to Subaru

...

Subaru walked up to Roswaals office

"Ok don't mess this one up."

Subaru knocked on Roswaals door

Knock

Knock

Knock

"Ohhhhhh co~me innnnn."

Subaru opened the door and walked in

"A~hhhh Subaru~kun how may I assist you."

Subaru cleared his throat before looking Roswaal in the eyes

"Roswaal."

"Yes?"

"Your... Ugly."

"...what?"

Subaru left without saying another word

"... O~k then."

...

Subaru having successfully trolled Roswaal went in search of his next victim

It didn't take long before he stumbled upon Petra just doing her daily chores

"Hello, Petra."

Petra turned around and gave a small bow

"Hello, Subaru-sama."

"Petra... would you like to discuss the sheer size and nature of the universe?"

Petra looked at Subaru with a confused expression

"What's a you-ni-verse?"

Subaru smiled

"The universe is everything. It includes all of space and all the matter and energy that space contains. It even includes time itself and, of course, it includes you."

Petra just looked confused at this explain

"Everything... but how can something be everything?"

"Well keep in mind that a universe isn't a single item, it's just the name for all smaller items."

"So am I the universe?"

Petra asked

"No, you are Petra. You are part of the universe, but no single individual or thing is the entire universe."

"Ok makes sense I guess."

"Oh but soon your brain will tremble at the knowledge I possess, information that should not exist in this world for hundreds... no thousands of years."

"Subaru-sama what are you talking about."

"Petra, it's time I gave you an astrology lesson."

5 hours later

"And that's how black holes work. So any questions."

Petra didn't ask any she just stared ahead trying to understand the words Subaru spoke

"No great... also just quickly."

Petra lifted her head to face Subaru

"You can't use this information practically in any scenario in your life, and if you try to pass it on as a teacher, nobody will believe you."

"Bu-"

"See ya later then."

And so Subaru left

...

Subaru was preparing for his final prank of the day

"Ok for my last prank."

Subaru summoned his invisible providence with zero consequences (Just because)

"I will prank Emilia-tan!"

...

Later at dinner

Subaru had arrived a little late as he was working on all the small details of his prank

His prank had two very important steps and even the smallest miss calculation might ruin everything

Subaru entering the dining room noticed how most residents looked at him with a concerned look

"Hay guys sorry for being late."

"Subaru~kunnnn we were starting to get worried that you would miss dinner."

Subaru gave an innocent smile

"I wouldn't miss eating with Emilia-tan for the universe."

Petra upon hearing that averted her gaze away from Subaru but only for a second

"Anyways I Subaru Natsuki have an announcement to make."

This caught the attention of everyone present

"*cough* Invisible providence!"

Suddenly Emilia's plate of food flew up and splatted against her face

Seeing their camps leader get assaulted by a plate of food of course made some people panic (Otto)

"Haha, you just got pranked?"

"What happened!"

Emilia asked while shoving the food off her face

Subaru then ran towards a window and jumped out of it...

And died

Subaru woke up a few days prior

"And... I'll get zero consequences."

Subaru then gave himself a thumbs up