Riho and Misono, two classmates with plain big breasts who are short on money, go to a boob pub together! They're not conspicuous or popular, but... when they take off their clothes, they're amazing! They're super voluptuous H-cup and J-cup breasts that are so erotic! They serve with all their might with their breasts! They go crazy!! And... they get the same type of customer!? They tempt him with their breasts and secretly do a live performance behind the scenes!! But Riho and Misono aren't satisfied with just the bar... they compete for a raw cock outside the bar in a reverse threesome creampie! The two girls have too much sexual desire and it's a battle for it!!