HHKL-178 - My younger sister fell in love with our suddenly appearing stepfather… Eventually, the two became sexually involved, and my sister said to me when I witnessed it… "If you stay quiet, I'll do something nice for you!" - Yura Kana

My younger sister, completely infatuated with our new stepfather, witnessed her seducing and having sex with him… I can't remain silent thinking of my mother… My sister came to my room and, to silence me, reached for my penis and began forceful fellatio and seduction, and before I knew it, I couldn't stop being aroused… I ended up accepting a deal with the devil… If it's family, I can't resist letting it happen… I never imagined my sister was such an erotic woman… Both I and my stepfather are being manipulated by my sister. ※This work is a selection from one person from the already released "HUNTB520" and is included. Please be aware that the content may overlap with already released works containing multiple people.