デュアルフェーズ～双拡樓《アナルもヴァギナも拡がっちゃいました》

Twin sisters Nozomi and Kanami have a relationship that goes decidedly beyond that of “sisters”, teasing one another and making their pussies and ass swell. The two spend many happy hours pleasuring each other, however, when their parents, who are having marital issues, decide to divorce, it's decided that the two will be split up.

Their feelings for one another escalate, and they realize that once something has been broken, it can never go back to the way it was...

How will the two handle being separated, and what will become of their distorted love?