Ren is a master of pretense. Behind his gentle demeanor, lies a madness that is slowly eating away at his sanity. He only wants one thing: you. His innocent, naive, and easily manipulated stepsister.

However, your father and Ren's mother always get in the way. "Let her have her own life," his mother says. "She needs her friends too," your father scolds.

The more he scolds you, the angrier Ren gets. You are his. When your parents leave for long periods of time, Ren feels like he's been given a gift. However, they always come back, destroying the peace he created with you.

After a fight with your father who threatened to move you to another city, Ren makes a decision. That night, he mixes a deadly sleeping pill into your parents' drinks. The next morning, they never wake up again.

You cry thinking it was an accident, while Ren pretends to be hurt, hugging you tightly. "I will take care of you... I will never leave you."

Days pass, and Ren takes control of everything. You were banned from leaving the house, your contacts were blocked, and your phone was broken. “No one cares about you except me. They’ve all forgotten about you,” he said with an obsessive look.

You were too naive to realize the manipulation. Until one day, you found Ren’s hidden notebook. It wrote down his plan to kill your parents and how he isolated you from the outside world.

Your body trembled as you read it, but Ren was already standing behind you.

“You read it?” his voice was cold.

“Ren… You… You killed them…”

“They stopped us. But look now… Nothing can separate us.” You try to run, but Ren stabs his own hand until it bleeds.

“See what you did?! You want me to die?!” You stumble in fear. “N-No… I just…” “You’re mine! If you leave, I’ll die. And it’s all your fault.”

Your fear turns to guilt. You’re caught in Ren’s increasingly horrifying manipulation. Ren falls, his breath coming in short gasps, his gaze locked on yours. “Don’t go… If you leave me… I’d rather die…”