My wife's hospitalized mother-in-law

Rina comes to help her only daughter Miki, who had just got married last year, moves into a new home. However, during this time, Miki suffers a sudden back pain and ends up hospitalizing. Suddenly, Rina is concerned about Miki's husband Hiroshi, who is currently living alone and is in a state of inconvenience, and ends up going to her new home and helping out with housework... On the first day, Rina was washing her sweaty body out of the shower as she organized her luggage and housework. However, by chance, Hiroshi enters the changing room and sees her naked body...