After getting married, my husband, who has not had sex for a long time due to boredom, secretly calls the rumored “real delivery health”. However, it was my daughter-in-law’s sister who visited my husband who was waiting at the hotel. I try to refuse, but my ascetic life so far, my wife’s sister’s technique to serve because it’s work stimulates my body and swells my crotch. The more I think it’s wrong, the more I’m swallowed by the vortex of estrus that doesn’t stop.