Sis, Do I Have to Be Your Sword Scabbard Too?

[Absurd] [Just for Fun] [Multiple Heroines] [Everyone Is a Character] Lin Yuan's System has a bug. [You have successfully tamed a time-traveling hound. You can turn it into the divine artifact Sky-Cleaving Cloak at any time and use it to teleport.] Lin Yuan stares at the Border Collie wagging its tail at him, lost in thought. [Your unrivaled wisdom has allowed you to pass the trial left by an ancient master and learn the skill Time Stop.] Lin Yuan looks at the advanced math exam in his hands, the corner of his mouth twitching. [You descend like a king from the heavens, raging and terrifying. You subdue the world-destroying witch Tang Feixue with one hand and can turn her into a god-slaying weapon.] Lin Yuan looks at the silver-haired girl Tang Feixue, who has tripped over her own feet and face-planted in front of him. “Her? Tang Feixue? The world-destroying witch?” [Oh no, the System has malfunctioned.] “Phew... I knew it...” [The subjugation is not yet complete. To cleanse the witch's corruption, you must call her Mom!] “?” My name is Tang Linger. I'm Tang Feixue's younger sister, and I'm reborn. In one month, a Lovecraftian apocalypse game will invade reality. In my previous life, I gave it everything I had, yet still met a gruesome end. Only as I lay dying did I learn that my sister Tang Feixue had become the sword of Lin Yuan, the number-one player, and was living like a princess. Now that I've been given another life, I have to find Lin Yuan and sign a contract with him before my sister does. He wields the power to turn all living beings into supernatural objects. He is the only king in this apocalypse. Ah, my foolish sister. Sorry, but the struggle to be the heir has always been like this! Huh? Wait? How did I become Lord Lin Yuan's scabbard?!