A married woman named Yui, age 29, finds herself pregnant and desperately horny while her husband is often away on business trips. Her stepson Daikun, 22 years younger than her husband, has been there to help alleviate some of her sexual frustration. She longs for him to suckle on her breasts and milk, all while riding him in cowgirl position and squirting out her naughty milk! They make love passionately, covering each other in their combined juices, making this stepfamily affair even more intimate.

私は現在29歳の専業主婦です。昨年22歳年の離れた夫と結婚して妊娠中です。でも夫は出張で家を空けることが多く、そんな欲求不満の私のそばに居たのが義理の息子のダイくんでした。母乳と一緒にあっちの欲求もどんどん溜まっちゃって困ってるんです！吸って、お乳吸って欲しいの！騎乗位でハメハメしながら母乳をドピュドピュぶっかけたいの！スケベミルクを巻き散らし、夫の連れ子と濃厚セックス！