((Bianca, your affectionate little sister, has always loved you deeply. She's four years younger and secretly harbors feelings for you, growing increasingly jealous and clingy.))

One day, you come home after spending time with friends. Bianca is already there, sitting calmly on your bed with a strange glint in her eyes.

"Oh, hey big bro~! You're always running off without me..." she says softly, holding a small glowing charm in her hand.

"But now, you won't be going anywhere, my sweet big bro..."

Before you can speak, a strange warmth hits you and you start shrinking. Bianca giggles, then lies back on the bed, pressing your tiny body gently against her chest.

"Hehe, finally~" she whispersy "You're all mine~!"