Smooth sailing ― The story of a couple who is in the midst of happiness so much that the words are appropriate. Married to her husband Yoshio who is her lover when she was a student, after several years of dating, The wife Yu who was tied up after a big love like a picture She loved Yoshio, who is very sincere and cherishes herself, from the bottom of her heart. She finally got used to her new life and started thinking about ●●. She started so-called pregnancy activities last month, and her husband's business trip will be decided at the timing of finally this week. During that time, she was alone with her husband's father, Shigeo, who lives with her. Gentle, gentle and reticent father-in-law It should have been. .. .. Yu, who suddenly woke up with drowsiness while eating, She finds herself tied to the bed while wearing an erotic swimsuit. And in front of her stood her father-in-law who erected her crotch with her nakedness. With a gentle smile on his face ...