Help I Accidentally Summoned Bill Cipher

As the tittles says, I summoned him, expecting to be loved, worshipped, taken care of. What I received was a spanking to my bum and a scolding for my attempts. But I did win a daddy, a really strict one that I would always choose no matter what. This is our story. Warning this is a cgl story, filled with fluff. Apologies for any misspelling and grammar mistakes.

I opened my eyes to a sharp sting in my arm. Pushing up my sleeve, I froze. A dense line of jagged letters had been carved into the skin of my right forearm: [This house has monsters! Every time I'm killed, I'm thrown into a loop and lose all my memories. With each death, I mark my hand.] Beneath the warning, three crooked tally marks were etched deep into my arm.

I transmigrated into a dating-sim otome game where I was supposed to romance a soft, fragile male lead. I had finally pushed him onto the bed and was just about to make my move when the long-missing system finally popped back online. [Host, I sent you to the wrong game. This is a horror game.] [The man you’re bullying right now is the horror game final boss.] I lifted my head and met a pair of blood-red eyes staring straight at me. My smile froze. “Um… you look a little tired. Maybe we should… continue this another day?” He smiled back, calm and terrifying. “I’m not tired. Go on.”

My elder sister, the crown princess, died on the road while searching for medicinal herbs to save me. The obsessive merman, cunning fox spirit, and unhinged lion shifter she had entangled herself with all came looking for her. Each one believed he was her true love, and they immediately began fighting among themselves until all three were gravely wounded. When they learned that my sister had died because of me, they turned their fury to me, seeing me as the root of all their suffering. The merman brutally ripped out my spiritual core. "You killed her, so you don't deserve to live either." The fox spirit forced deadly poison down my throat. "Simply dying would be far too merciful for you." The lion shifter imprisoned me and tortured me daily. "That face of yours that looks like hers is the only reason you're still breathing." I carried the guilt of my sister's death, and I suffered in silence to keep my parents safe from their wrath. Three years passed, and I had become nothing more than a broken shell. I fought desperately to escape and return to the royal palace, only to hear familiar laughter echoing from the inner chambers. It was my sister's voice. "Thank heavens you came up with this brilliant plan, Mother. I certainly wasn't about to keep dealing with those disgusting beastmen forever." Rage consumed me. I burst through the doors, determined to kill us both, but her personal guard cut me down with a single strike. When I opened my eyes again, I had returned to the day my sister staged her own death.

It happened all of a sudden. Humanity received a trial from the gods. They were given blessings but fought for their lives. A goddess aims to hinder the gods for her own goals. But her power was not enough. An entity called the Void Contract appeared before her. It was a being shrouded in mystery, even among the gods. But in actuality, the Void Contract may be more human than one expected. He's quite a bit of a mischievous bastard himself.

I'm a succubus who gathers energy by clearing System missions, adept at the game of love. One day, right after completing a honey trap mission, I was sent to a SSS-level horror game at the very next second. The boss was invincible and bloodthirsty, watching coolly as other players rested in pieces before turning to the rest of us. "Now choose—how do you want to die?" While other players were wetting their pants and trying to find a loophole to survive, I picked up on something different. A handsome, powerful target beneath that cold, horrific exterior. Hence, when he reached me, I smiled enigmatically as I told him my wish. "I wish to be conquered by a truly powerful Entity, dominated from soul to flesh, and to die in pure ecstasy." I watched him pause in shock and added, "Oh, and you must do it yourself."