Deisui Sasereba Rakushou Sex: Oba to Itoko-hen

Synopsis

Dead drunk and out like a light. He's seen that sort of lady before. When he did, was there a naughty little voice in his head? "How far could I go? No... no... of course I wouldn't... but..." Before his eyes are two gorgeous, prone, drunk women. One is his curvy aunt. The other is her cute daughter. (Source: dlsite, edited)