Chisato felt indebted to her daughter, who grew up in a motherless family because of her affair. So when her daughter got married, she was determined to do whatever it took to protect her daughter's family. However, it was her daughter's suspicion of adultery that was consulted by her son-in-law. Divorce should be avoided at all costs. Chisato made a blowjob to her son-in-law with that single-mindedness. I will take it out for her daughter. That was her redemption, and in addition, to protect her daughter's family.
