"Little brother, you're so cute!" A tall, thin woman with large breasts, lecherous tattoos, and older sisters who have sex with young boys. Feng Kelian, Hiiragi Yuki HNTRZ-010

Masao, an ordinary virgin who has always been diligent in his studies, is approached by his older brother, Yuki, a wanton woman. The welcoming brother brings his free-spirited and sexy friends, Yuuki and Karen, home, where he makes love to them repeatedly, indulging in pleasure. Although she doesn't get along well with her brother, she is interested in mischievous things. The next morning, when his brother goes out to work, the sexy Karen and the devilish Yuki, both still drunk, approach Masao and fix their gazes on his innocent body…