She meets her brother for the first time in a long time when he returns home to tell her about his marriage. Bubbling Kokoro and complicated emotions are intertwined, and she wants to tell him about her big decision... "If I have your child, we can get married, right?!" She musters up all her courage and seduces her brother in a forbidden love. She suppresses her sense of immorality and gradually awakens to pleasure. The bond between brother and sister is one of devouring each other's carnal desires, with repeated creampies... *There are no performers under the age of 18 in this work.