Worried about her sister who was accidentally made to receive internal ejaculation by her boyfriend, the older sister decided 'fingers can go all the way in,' and resolved to suck out the semen with her mouth. Though confused by her sister's actions, the younger sister feels pleasure from oral sex, and seeing this, the older sister gets excited... Unable to hold back, the sisters engage in 69! The boyfriend who returned also gets involved, and they take turns with bare penetration! In the end, they share and drink the semen mixed with various bodily fluids！！
