Desire Pandora Vol. 4 (manga)

Then Nell turns herself into a glamorous, fully-grown woman, giving him a unique view from below! Add Sister Rafalia and a bellybutton tug-o-war and Tsukasa is in for a real feast... When tanned beauty Eina storms in with her intimidating aura, Tsukasa gets a face full of booty and some thick thighs to boost his blood pressure! What's left for him to do but dish out the spankings all around?!