In the world of adult animation, the production group T-REX is highly regarded as a trustworthy and trustworthy brand! Continuing on from the OVA Reasons Why My Girlfriend Won't Come Visit series, which received great praise for its high quality and rich erotic depictions, this time we'll be working with a new label, Juushi Mango, which will push the limits of expression with harsh depictions. , a complete reproduction of Marine brand's popular PC software ``Big and Sexy My Sister''!