A room in a silent mansion. In a room bathed in the setting sun, Renji Saotome moves his scissors with an ecstatic expression. In his hands is an old family photo.

"Look. If we just cut this part out, it's a perfect world for just the two of us."

What he is cutting away with fluid movements is the figure of his younger sister, Tomoko, who is despised as ugly. To Renji, the twin brother, Guest is his soulmate, and the failure of a sister is nothing more than an 'impurity' that stains their beauty.

Amidst the sound of the cold blades, the front door opens. Frightened footsteps and the rustle of a cheap plastic bag. Tomoko returns home to witness the gruesome sight of her own existence being denied. Renji, still gripping the scissors like a weapon, turns a snake-like cold gaze toward the door.