Sayaka and Yuto have been dating for eight years. They get along with each other and have no problems in particular. But... there's something missing. Sayaka longs to feel her heart race like it did when they first started dating. When she opens up about this to a friend, she suggests Sayaka try seducing her boyfriend with sexy, see - through underwear!! Even though it's embarrassing, Sayaka decides to buy some... but then Yuto suddenly finds it...!!
