Itsuki enjoys a happy marriage but remains frustrated by a husband who gives too little foreplay. Late one night, she hears her in-laws moaning. Her father-in-law also suffers from erectile dysfunction and has learned to bring his wife to repeated climaxes using only his tongue. His extraordinarily refined cunnilingus turns out to be exactly what Itsuki needs. When his erection suddenly returns, events slide into penetration. “Itsuki... my tongue feels good, doesn't it? This may be the last erection of my life. Please let me inside!” His tongue and cock suit her perfectly, driving her to orgasm again and again as their affair descends into repeated creampies.