Hiccups POV

I walk upstairs, ready to have a night in, I'll admit I get exited to cuddle with (y/n). But something was... Off.

I opened to door to see something I didn't think I would.

(Y/n) had taken the sheets off the bed, and hung them in the rafters, where she hung upside down, the sheets wrapped around her legs.

"Uhh... (Y/n)?"

"OH HEY PUDDIN!" She waved and added a psychotic giggle.

"Puddin? Ok (y/n) maybe get down from there" I said.

She smirked and flipped down from the roof, landing gracefully with a giggle.

"What's wrong?" I asked.

She shrugged her shoulders and giggled again.

I went to grab her hand, but when I did, I felt... Scales? I looked down and saw black scales, covering her hands. And when I looked up I saw her eyes changed from their usual colour.

"So Hiccy- wanna have some fun?"

She emphasised the word fun. Uh oh.

"We're going to take you to the gang ok"

I grabbed her arm and pulled her downstairs, out the door and toward the academy, she laughed psychotically as we walked in, making all the teens look at us.

"What's up with her?" Astrid asked.

"I don't know, maybe there's something in that magic book, who has it?" I asked.

"Fishlegs" Heather said.

"Of course"

"I'll get him" Heather said running out.

(Y/n) then jumped on my back, wrapping all her limbs around me, she giggled before saying:

"Come on Hiccedy! Lets have some hehe... Fun"

Astrid and the gang started wide eyed at me and (y/n), who by now had licked the side of my face.

"Ok sweetie, I love you but I'm putting you in a dragon pen for now" I said.

I carried her over and tapped her in, I felt bad, but this is for her own good.

"But baaabbyyyy... Fun!" She pouted sticking her arms though the bars.

"Sorry but this is for your own good" I said.

"Fine, I'll just talk with the voices... For now" she said, beginning to climb up the bars and hang from the roof.

"Got it!" Heather said walking in with the book. "Fishlegs won't let go of the book of dragons"

"Finally, she's nuts, she said she's hearing voices... And her eyes and hands shave changed" I said opening the book and flipping though the pages.

"What's that? I should bust out with a baseball bat and sword, kill everyone and have fun?"

We all turned to look at the psyco (y/n).

"Sorry, the voices!" She giggled "I'm kidding, they said so much more than that..."

We all turned back to the book where I found exactly what I needed.

"Hybrids go though a psychotic stage every two years, each time getting stronger and potentially lethal, they usually gain more scales and a change in eye colour, their psychotic behaviour, is stuff they want to to, all being expressed though a voice in their head, going along with those things is a good idea, if they're not happy, they usually loose it and go on killing sprees to calm their dragon like anger..."

Yeah that's just great.

I turned to look at (y/n) why leaned in the bars, her arms sticking though.

"Come onnnmn Hiccup! Come in here and have some fun with me!" She pouted with a psychotic laugh.

The gang looked down at me, knowing I had to.

"If this stops it, then thank Thor..." I said under my breath.

I then took a breath and turned to Astrid.

"Keep my parents away from here please..."