This virgin hunting series is limited to those in their 30s and above!! After a long and difficult life as a virgin, all men have had dreams and fantasies about sex that they had almost given up on, and the ideal situation for losing their virginity. The desires and wishes that these virgins have always had, "I want to have a first experience like this!!" will be fulfilled by everyone's big sister, Miss Natsuko Kayama Kayama!! The erotic and kind Kayama's tolerance, powerful body, and skilled techniques will make virgins weak in the knees!!