After 15 years of marriage, Minato had no children, but lived happily ever after. However, his life changed completely when his father-in-law, Akira's dementia got worse and he was forced to care for him. Occasionally mistaking him for his deceased girlfriend's mother-in-law, she threatens to be sexually harassed, and finally Mito takes out her anger on Akira. However, Akira misunderstood this as his wife's displeasure and pushed Mito down. Misho is shocked by her father-in-law's sexuality, which does not suit her age.
