Intimate Days with My Tsundere Sister

She and I are left utterly alone in our quiet house. - In the dead silence of the residence, a sweet, dangerous tension begins to thicken the air. - She, usually so cold to me, reveals a completely different side of herself when it's just the two of us at night. - Her lovely sleeping form, wrapped in loose pajamas... The soft swell of her chest and smooth, white skin peeking out--the sight makes my groin ache and my pulse hammer in my throat. - With every one of her defenseless, sweet breaths, the forbidden desires I'd long suppressed began to throb with a raw, desperate need.