Gifted with beauty and brains, school idol Sarasa has waited years to give her virginity to her beloved little brother Kira. The moment he comes home after passing the entrance exam, she pounces on him in a see-through negligee, eyes bloodshot with lust. What begins as passionate sibling sex quickly escalates when sporty, loli junior Kasuri appears, declaring her own love for “Senpai” and aggressively joining the fray.

The two girls compete ruthlessly—classroom handjobs, family restaurant waitress service, home tutor punishment play, and more—using every inch of their bodies to claim Kira’s attention and seed. Jealousy, squirting, paizuri, and intense creampie battles ensue as the big sister’s yandere-like devotion collides with the junior’s energetic flat-chested passion. Expect maximum heart-pounding incest, competitive service, and gallons of white fluid in this classic PoRO hentai series.