Various x Reader

Gaster Gang x Inkling! Demon! Reader

(What you look like)

A/n: I don't own this art. The art belongs to Maeka Enderfox on Deviantart. 

You had fallen into the void months ago. You had never told the gang about your....demon problem. You would turn into a demon when you were angry, sad or scared. You called your demon, Arima. She would possess you and she would take control. You had a brother who didn't survive childbirth. His name was Raita. You saw him in your head and dreams. He's always there watching over you. One day, they were hanging with the female gaster and the kids. You were alone. You didn't like being around too many people. You were in your room when you twitched uncontrollably. It was Arima. "What now Arima?" "Let me out now!! I'm not gonna be stuck here for any longer!!" She screeched. You felt her take over. Your skin and tentacles turned black, you had four tails, one black eye with a red iris and a white eye. You let out a demonic screech.

Mirai pov

We were downstairs, just chilling. I went to ask Swap something. I haven't seen Y/n around. I tugged on his shirt. "Swap?" I asked. He looked at me, smiled and placed me on his lap. "Yes, Mirai?" He asked. "Is...Y/n okay?" I asked. He shrugged. Then we all heard a demonic screech from upstairs. I felt a demon presence coming from Y/n's room. I got off of Swap's lap and ran upstairs. Everyone followed close behind. I knocked on Y/n's door. "Y/n?! Open the door!!" I yelled and tried to open it, but it was locked. 

Nobody pov

You heard them, but you didn't open the door. You threw things around and scratched the wall. You then opened the door but hid. They opened the door and gasped. They saw scratches on the walls, and the room was trashed. Then the door slammed shut. They turned and saw you growling and twitching. 

(You as the demon)

Mirai growled. You muttered things under your breath. "Die...Die...Help me..F*cking monsters...Why nobody like me...Die Die Die Die Die....EVERYBODY JUST F*CKING DIE!!!" You screeched, sending your spiky tails at them. They all dodge in the nick of time. "WHAT THE HELL IS THAT THING?!" Fell and Red exclaimed. "Y/n is an inkling, but there is a way that thing got to her. If an inkling has suffered from bullying non-stop, a demon feeds off their pain and gets in their heads." 28 said. "so how do we get rid of that thing?" Swap asked. "We need to find a way to get that thing out of her." DJ said. Fell used his bones, but you shattered those things with ease. Then a bright light came. Everyone uncovered there eyes and gasped.

(It's really a boy)

He looked at you. "Get out of her body Arima." He said. "Who's Arima?" Swap asked. "The inner demon in my sister." He said. "Wait...sister?" Wing Ding asked. "I'm her deceased older brother. I'm Raita." He said. "Get away from me, she's mine. You weren't there for her, when she was being bullied or beat up were you?" Arima growled. "No...I wasn't...but leave her alone. She can't see me now cause of you...so leave her alone now." Raita said. Arima growled and lost control of your body, turning you back to normal. You fell on your hands and knees. Raita raised your chin to meet his gaze. When you saw him again, f/c tears streamed down your face.

Raita pov

When I saw her face again, I never felt so happy in forever. She hugged me, tight. I hugged her back. "My sweet little baby sister...I'm so sorry." I said. She just cried in my neck."DON'T EVER LEAVE ME AGAIN RAITA!!!" She cried. I rocked her and rubbed her back. I looked at the Gasters and kids. "Thank you all for watching over her." I said. They all smiled. "Is she gonna be okay?" Cheer asked. I nodded. I felt Y/n's arms fall off of me. She fell asleep. I saw the room and sighed. I used my magic to repair the walls and fixed anything that was broken. The room was back to normal. "Why didn't she ever tell us this?" Mirai asked. "When someone is being bullied, for too long and they have that thing in them...They don't talk about it. She was scared, worried and depressed. That's why she didn't tell you all." I said. I laid her on the bed and covered her up. I turned into my other form.

I didn't want to see her suffer. I hugged her and whispered: "I'll always be there for you." I said. She hugged me back. "I know you will." She said, and fell back asleep. I gestured the others to go downstairs so we could talk.

Timeskip

Everyone now knew about your problem. Raita could now be seen by all eyes. You were on the couch, sleeping. Swap had covered you up and the others just left you some things. Stars gave you a bracelet, Swap had given you a necklace, Mirai gave you a ring, DJ, 21 and 28 gave you some new headphones, Fell and Red gave you some sweatbands, B and Neko gave you some new boots, Nova gave you an art set, Wing Ding gave you some glasses, Sci gave you a book and Raita gave you a crystal. They all cared for you, and you cared for them, you were glad to see your brother again, but what about Arima? Nobody knew.