"Ah! It wasn't supposed to be like this!" Luna's Kokoro for revenge is ignited after her fiance is seduced by her best friend. In revenge, she was supposed to seduce her best friend's husband and seduces him, but he's more virile than she imagined! After Luna is fully satisfied with her slutty behavior, he strikes back and makes her cum again and again with his piston-like thrusts! "My pussy's gonna break!" When the condom runs out, he fucks her raw! She climaxes to the max! Even when the virile monster man gives up, he doesn't stop pistoning her, and she is fertilized with a huge amount of cum! The genius slut is defeated!