After giving his ignorant younger sister, whose body had developed into an extremely lewd state, the man became obsessed with touching his penis, engaging in unprotected penetration and ejaculation without restraint...! He then relentlessly thrust into her while in a riding position, forcing her to ejaculate three times in a row...!! MFT-007

My sister is somewhat unfamiliar with sex, even unaware of incest. After I taught her some false sexual knowledge, she innocently touched my penis, which aroused me. Although I felt remorse and guilt, I craved penetration because of the pleasure... and ultimately, incestuous sex occurred! Even after realizing I had ejaculated inside her and that she might be pregnant, my sister fearlessly and actively engaged in a vigorous riding position...! I hope things can remain as they are, so my sister never knows the truth!