If only my sister was this cute... We'll make that fantasy come true! SOD star Yume Takeda becomes your sister and you can enjoy a completely subjective virtual sex session! And it's nonstop! Yume, who is usually quiet, only shows her lovey-dovey side to her big brother (you). She loves her big brother so much that she can't help but have a lovey-dovey, incestuous sex life!