"I came to show you my underwear!" "Let's create the ultimate erotic novel together!!" Miki, also known as Ittan, is a rookie erotic novelist with zero experience with women. Riko is an underwear enthusiast with zero experience with men. To create the "ultimate erotic novel," these two with absolutely zero sexual experience start cooperating despite their embarrassment!! Confused by Miki's passionate "request" after he validated her "love for underwear," Riko agrees, but...? A story of pursuing sensuality, born as two pure souls expose their own fetishes, officially begins!!