Chapter 2. Darkness meets Serenity

A few weeks had passed since the two sailor scouts and Luna have fallen into the Underground in hopes of finding Frisk.

Luckily for them they did including some new friends who had became very close. Over the week Mina had gotten a job at Grillbys while Serena stayed at the Skeleton brother's house keeping in contact with Artemis and the other Sailor scouts.

" I don't like it . It's to peaceful up here. What if they followed you down there?" Rei's voice asked from Serena's communicator.

"Gesh Rei you are such a downer." the blond pigtail girl responded in annoyance while shutting her crystal blue eyes.

" I'm serious Serena ." The raven hair girl voice said in a worried tone.

"...Look if any alien freaks did follow us . Mina and I will be ready and if we need back up. Luna or one of us will call on you to send someone down. We'll be fine."

"...Okay look lunch is over I should get to class. I'll tell the others that you are all safe and okay."

" Thanks Rei see ya." Serena said with a sweet smile as she shuts her communicator.

A soft knocking sound had Serena slowly turn her head finding Papyrus standing in her door way with Luna in his arms . As Frisk stands beside him with their bangs shadowing their eyes.

Serena give a small smile to Papyrus as she side glances towards Frisk. With worry in her blue eyes as a dark aura surrounds them.

" Pigtail human we have finished playing with the adorable cat. Now the small human and I are going outside to practice combat." The tall skeleton announced as a sick smile slowly forms upon Frisk's lips.

" ...Are you sure should practice this late I mean Sans should be home soon."

" He usually goes by Grillbys first beside the small human needs to be trained in fighting so . That nothing will happen to them." Papyrus argues while he gently places Luna on the ground having the small black cat runs towards the bed and sits in Serena's lap.

"... Okay have fun you two." she said with a fake sweet smile.

Earning a small head nod from Papyrus as he and Frisk leaves the open door way.

The blond Pigtail girl waited till she heard the front door slam shut from Papyrus's excitement the quickly jumps off the bed and grabs her pink jacket from the closet.

" Serena what are you doing?" Luna asked with her brown eyes now widen in confusion.

" I know you sensed the aura on Frisk Luna. Something is wrong...we might have to give our secret away sooner then we plan. That Aura isn't Frisk's it..it was something darker I have to go after them."

"I can't let you go alone." the black cat said in a worried tone.

" You have to Luna I need you to get both Sans and Mina . I'll be okay just meet us at the usual place that Papy trains at." Serena said as she rushes out of the room and runs down the stairs while Luna. exits thru the window and runs towards Water Fall after landing on the ground.

Sans was fast asleep at his hot dog stand only to waken by a female voice.

"Sans! Sans! Please you must wake up quickly!" The voice said in a panic tone as a small paw pats the top of his head.

As he slowly opens his eyes sockets Sans finds Luna sitting on the counter in front of him.

" Uh~"

" There is no time to explain right now we must go get Mina. And meet Serena in the forest where Papyrus trains. He might be in danger." the black cat interrupted having Sans white glowing pupils vanish from his now pitch black eyes.

"...Come on...I know a short cut." he said while gently lifting Luna into his arms then walks thru a portal that had formed in front of them.

Mean while Sailor Moon ran thru the forest as quickly she can finding Papyrus standing in the middle of the clearing with Frisk standing in front of him now holding a sharpen chef knife in their hand with a sick smile on their lips getting ready to attack.

"No!" she shouted as she runs in front of the tall skeleton only to stop the brunette child from running towards him.

" Human?! Why did you interrupt mine and the small human's training?! And what are you wearing?!" Papyrus asked now folding his arms across his chest.

" Because Papy ...That's not Frisk they will hurt you. I'm right aren't I ? You'r not Frisk are you?" the pigtail sailor scout asked as she narrows her blue eyes towards them.

Only to earn a sick giggle from the child as they lift their head revealing blood red eyes now slightly glowing.

" Well well aren't you a smart human but. From the armor you are wearing and the soul I see inside you . You are not a normal human. Are you?" Chara asked as they place the back of the knife against their lip.

"..."

" Well aren't you being mean not answering my question. Hm~ I have an idea I'll just rip that little mask of your's off. It'll be fun." the possessed child finishes with a lick of their lips while pulling away the blade and holds it in front of them as it begins to glow a bright blood red.

The small blond pigtail girl let's out a quiet gasp.

Chara was using her energy to power up their attack. Which made the attack even stronger. Even Sailor Moon wouldn't be able to stop it... there was only one thing that would be able to.

And she didn't want to use it but if she doesn't Papyrus would be turned into dust and that was something she wasn't going to let happen. The younger skeleton and his older brother have became dear friends to her she didn't want to lose them. Not now not ever.

"...I have no choice." Sailor Moon whispers as her brooch on her chest begins to glow brightly.

"Die!" Chara screamed as they slash the air with their knife having the dark red energy fire towards them only to be block by a brilliant flash of light.

"Paps!" Sans shouted as he walks thru the portal with Mina having the light slightly blinding him.

His eye sockets widen as the light dies down.

Revealing a girl in a white long dress with long blond pigtails standing in front of Papyrus holding a silver crystal that seems to be shielding both of them from the possessed child's attacks.

The small pig tail girl slowly opens her crystal blue eyes towards staring towards Chara with sympathy.

"...Princess Serenity." Mina whispers having the blue hoodie skeleton look towards her.

" You three have a lot of explain' ta' do."

" We will but first Mina turn to Sailor Venus quickly. The princess may need your help." Luna ordered as she jumps on to Sans shoulder while earning a small nod from the long blond haired girl.

" Venus Power!" Mina shouted while holding a orange stick with a star on top that started glowing brightly as it transforms her into her sailor scout armor then quickly runs towards her moon princess.

" Princess!" Sailor Venus shouted as she stands next to Serenity.

"Venus I need you to keep Papy and the others safe . While I free Frisk from the evil spirit that has control of them." the Moon Princess orders earning a small nod from her loyal protector.

" Be careful princess." Venus whispers as she quickly grabs a hold of Papyrus's hand and pulls him to where his older brother and Luna were waiting for them.

" Frisk I can sense that your trying to fight them." Serenity said softly as her glowing crystal beam continues fighting the dark energy attack.

" ...Just hang in there I will get that thing out of you." she finishes while closing her blue eyes. Having the bright beam grow stronger pushing against the dark attack towards Chara who lets out a low growl.

" It seems like I'm not strong enough...Until next time wanna be princess." the possessed child giggled as they vanished into thin air before the beam could hit them.

" Oh..Frisk." Serenity whispers as the Silver Crystal returns to its rightful place. Having her turn back into Sailor Moon as she falls backwards from fainting. Only to have to the blue hoodie skeleton quickly teleport behind her and catches the royal sailor scout before she could even hit the frozen ground.

" That girl." Chara hissed as they lean against a cave wall .

" Is a nuisance to my plans I have to find a way to get rid of her."

" Perhaps I can help." An elderly voice said from in front of the possessed child causing them to look up.

Finding an elderly figure in a robe floating in the air with a crystal ball between their hands as the hood from the robe hid their face.

" For you see that pest of a princess has something I want . And I cannot have until she is dead." the robe figured chuckles darkly .

Earning a small smirk from the blood thirsty child.