"And if you want to know, my ancestors are also...humans like you" Serenia said.
"What!?" Tanjirou and friends were shocked.
Sounds of thunder were echoing in the sky. Looks like there will be a heavy rainfall soon.
"Thousands of years ago, my planet was a part of the Solar System, and the name of my planet is Antichton. Before Antichton was ejected from the Solar System, Antichton and Earth are sharing the same orbit your planet occupy now" Serenia explained. "My planet has become unstable after the arrival of a strange comet known as The White Curse. The comet crashed, and my planet is unknowingly teleported to the outer space. Since then, Antichton will teleported to the other planetary system in every 100 years. Every creatures, sentient or non-sentients, including my once human ancestors, they have evolved become something different, just like what had the Earthlings described about my race nowadays. And at a long last, Antichton finally found it's way back to her original place, the Solar System"
"That was weird" Muichirou commented.
"Where's your planet last location before it teleported inside the Solar System?" Rui asked.
"Sirius System, and the planet Erion is in there. My planet has waged a war against the Erionians" Serenia answered.
"Did your race are still in war against them?" Zenitsu was the next to ask.
"Not anymore, but the hostility between my race and the Erionians still continued to this day" Serenia turned behind, facing them
"It must be tough for your race, right?" Tanjirou said.
"Yes" Serenia nodded. "My kin has fought many battles against the non-Earth humans and other aliens for centuries?"
"Did you have fought any space monsters before?" Inosuke asked in excitement.
"No" Serenia shooked her head "But my grandfather has fought and kill one"
"I told you! Space monsters are really exists!" Inosuke exclaimed.
"Shut up, Inosuke" Aoi frowned.
Beep! Beep!
Serenia's digital watch started ringing. She quickly answered the call.
"Hello?...Really?...Okay, i'll return to the spaceship shortly!"
Serenia finally ended the call.
"Sorry, humans but i need to return to my spaceship immediately" Serenia said for the last time before ran away from them.
"Hey! Where did you want to go!?" Inosuke shouted.
"See you guys soon!" Serenia waved her hand as she slowly disappeared from their sight.
"Hmmm" Inosuke sighed.
"Hey, should we go home now? The rain will fall soon" Yuichirou said as he glanced at the sky.
"Oh, i think you right" Tanjirou replied.
...
It's 7:30PM now, and the rain just stopped a few minutes ago. No one was seen in Kimetsu Public Park right now.
Except for a certain humanoid creature...
The Night Crawler.
The Night Crawler was crawling alone in the park. It's looks like Demaclos have ordered the creature to looking for something. Or maybe The Night Crawler was hunting for someone.
The Night Crawler could felt that something was spying on the creature from a tree. But when the eyeless horror looked upon the tree, it's already gone.
"Raaaaaargh!" The Night Crawler growled.
"Lalalalalalala!"
The Night Crawler could heard someone singing from nearby. When the creature turned it's face towards the person, it was Douma.
It's unknown what was Douma doing in the park. But the scam artist wasn't aware of the danger awaiting him.
The Night Crawler patiently prepared to launch an ambush against Douma. The scam artist could be a tasty dinner for the Night Crawler.
However, as the Night Crawler finally charged against Douma, the creature could heard inhuman screeches from the upside. The Night Crawler spotted a flying humanoid monster was getting into his way.
Morvarion a.k.a The Birdman. Zargoror has sent Morvarion to kill The Night Crawler.
The Night Crawler managed to dodge Morvarion's sudden attack, but it was far from over. The Birdman was preparing to strike again.
"What's that!?" Douma was panic as he then noticed Morvarion and The Night Crawler were attacking each other.
"Skraaaaaaaa!" Morvarion managed to claw The Night Crawler, making the latter hissed in pain.
"Oh no! It's the aliens! Aaaaaaaargh!" Douma ran away in fear.
Luckily they didn't noticed Douma as they were busy fighting with each other.
...
Meanwhile, somewhere in the neighbourhood, Senjurou was already headed back towards his home. He need to reach his home quickly, it's unusual for him to still in the outside after 7PM. Kyoujurou and his parents must have been worried about him.
As the youngest Rengoku approached a nearby street in the neighbourhood, he just accidentally eavesdropped a conversation from there.
"We need to kidnap a human for this experiment"
"But I thought we should kidnap that rogue professor first?"
"We'll deal with that Erionian later"
When Senjurou peeked from the wall, he was terrified in silent. He just spotted two aliens, much to his own horror. They're Mordrezan and Bithus, the henchmen of Zargoror.
"We need to be careful, it wouldn't be a good situation if the puny humans noticed our presence" Mordrezan warned.
"Agreed, I hope our plan will be done smoothly" Bithus replied.
"Now it's time to search if there are any humans nearby, got it?" Mordrezan said.
"Alright" Bithus nodded.
Meanwhile, as the two aliens continued chatting with each other, Senjurou slowly tried to run away without alerting them. Unfortunately, the Rengoku accidentaly stepped on a stray cat's tail.
"MEOW!"
"Hey, do you hear that?" Bithus asked.
"It must be a human! I knew it!" Mordrezan guessed.
"We must catch the human quickly!" Bithus said.
As they looked at the street on their left side, there was nobody unfortunately.
"Looks like that human has managed to escape" Mordrezan was unhappy.
"Or maybe the human was hiding from us" Bithus guessed.
"Maybe you're right, i hope we'll find the human around here" Mordrezan said.
As the evil aliens then searching for Senjurou, the younger Rengoku was hiding inside someone's backyard. He need to be careful or the aliens will capture him alive.
Unbeknownst to him, a certain girl with braids approached her from behind.
"Eh? Senjurou-kun, what are you doing in my house's backyard?"
Senjurou was shocked. He quickly turned behind.
Stood in front of him was Mitsuri Kanroji, the first year art student in Kimetsu University. She was curious what was Senjurou doing in the backyard of her house.
To be continued...
Fun Fact #5: Bithus was originally an Erionian named Stourlas who worked as a guard in a biological research institute. However, an unfortunate incident occurred and most of the personnels in there became mutated, including Stourlas himself. The mutated ones were sent to a special camp located on an asteroid in Sirius System, yet the camp was later overran by a Gorgoronian expedition forces. Stourlas, now known as Bithus worked as guard in their spaceship for a brief period before left the expedition forces to join Zargoror's crew