A Promise to Keep [Diabolik Lovers Fanfiction]

The Past

Disclaimer: I DO NOT OWN DIABOLIK LOVERS EVEN THE COVER I'M USING IS NOT MINE EITHER.

Apologies for the wrong grammar usage and misspelled words ahead.

This is a Karl Heinz x OC and despite that, it will be narrated on my OC's point of view.

I'm sorry if Karl Heinz is OOC in this one shot. I only watched the anime and I haven't had the chance to play the game cause I am a poor girl.

Elegant. Seductive. Passion.

Three words that described the Roses perfectly. Beautiful but dangerous as its thorns will never hesitate to pierce your skin once you handle it the wrong way. I silently smiled at the beautiful roses that caught my attention in the garden.

"Lady Caroline, the master has summon you in the library," one of the servants informed. I turned my head at her direction with a questioning look.

My father?

"Did he stated the reason?" I asked.

She bowed her head then looked up. "I apologize, milady, but the master didn't say anything," the servant apologized politely.

"I see. You may go now," I dismissed the servant.

"*bow* Please excuse me, milady," she bowed and then took her leave.

I wonder why did my father summon me?

I stood up from my seat and started to walk inside the castle and made my way through the library. Yes. I was living in a castle. I was living with my father, the demon lord, and my younger sister, Cordelia.

And speaking of Cordelia, she was standing in the middle of the corridor and a sugary-sweet smile was plastered across her painted red lips, enhancing her emerald orbs that gleamed happiness and wickedness, soft skin, rather fair complexion and beautiful, silky straight, purple hair. Enhancing her already beautiful features than it is already.

Odd. We're siblings but we don't have similarities when it comes to physical appearance.

My hair was long and on big curls. It was dull pink in color as well as my eyes and my skin tone was lighter than hers.

Well, I guess its normal. Since we have different mothers.

"You're blooming today, Caroline," she complimented and still keeping the sugary-sweet smile, so sweet that I know it was fake. I clearly know that behind that beautiful and sweet smile of hers, an evil thought was lurking behind it.

That's right. Although, Cordelia and I were sisters, we're definitely not on good terms with each other. She loves to see me suffering, she loves to see me in pain, she hates me. I didn't know why she despised me that much. I always treated her nicely but it seemed that she saw that in a wrong way, she sees me as a rival rather than a sister. Its like she's competing with me although it was clear as crystal that she's better than me in everything, beauty, talent, everything. She despised me that much that she stole away my mother's life. But despite all the fact that she hated me and will do everything to bring me down, even plotting my assassination, I can not bring myself to despise her. Splendid. I'm the noble masochist. Masochist of all masochist.

"You, too. Blooming as always," I complimented back and smiled, passing through her side and continued walking on the corridor that seemed endless until I reached my destination. Composing myself, I placed my fist and gently, knocked on the door, three times.

"Name and state your business," the butler inquired.

"Lady Caroline."

"My Lord, Lady Caroline arrived," I heard the butler informed to my father.