"Swallowing Creampied Semen" is back with a new project with additional situations! Yui, the younger sister, heard rumors that sperm is good for beauty and wants to try drinking it right away! But her boyfriend has been cold lately, so how can she get some sperm? That's it! I'll get some of the sperm from my older sister's couple who always have lovey-dovey creampie sex! Oh, maybe it'll help my skin! Then her older sister Rena also gets interested, and the sisters start devouring each other's sperm!