They started out as childhood friends,then became lovers,and then due to their parents' circumstances they became brother and sister... This is the story of the twisted and forbidden daily life of love between the two young people,who continued to secretly have sex and ejaculate inside each other. PIYO-042

Overview： Childhood friends Madoka and Tatsuya are dating in secret from their parents. They had hoped their relationship would last forever,but it falls apart when their parents remarry. Their status as siblings tears them apart. Living under the same roof,they feel each other's presence is far away. Tatsuya's female classmate finds a way to get closer to him. Jealous,Madoka pressures Tatsuya into a physical relationship again. The two secretly become lovers again. However,their happy time is short-lived,as their parents find out about their relationship and urge them to break up. Madoka runs out of the house,and Tatsuya chases after her. They end up on a beach where they swear eternal love to each other... The two childhood friends continue to have creampie sex without their parents knowing,living the daily life of a blue,twisted,forbidden love.