A lone hero one day encounters a married woman named Yuuki at a coin laundry when her washing machine breaks down. To his surprise, Yuuki drops her underwear right in front of him as she leaves. Unable to say a word, the hero ends up taking the underwear home. A few days later, the hero meets Yuuki again at the coin laundry. In the awkward atmosphere, Yuuki drops her underwear once more! The hero can't contain his excitement over this second stroke of luck and takes the underwear home. But that very night, Yuuki suddenly visits him...
