MIDA-686 Mitsuki Momota - Ejaculation-loving Youto and his frustrated Jcup sister's newly-wedded Nakadashi game Mitsunari Momota

Yuto is very attached to his older sister, Mitsuki, who lives nearby. One day, when his parents are away, the two of them are left alone at home. After playing innocently, Mitsuki takes off his dirty pants and discovers his huge penis... Feeling aroused, she can't resist trying it and suggests they play "marriage." "Put it in here and move your hips... that's right... ahh...!" As she gives him a lesson in sex, he ejaculates...