"Yakuza live for appearances. If you lose and lose your cool, it's all over for you." Two yakuza, Ryuzo and Kenji, spend their time in a boring manner at a billiards parlor abandoned in a corner of the city. When Momoko, the sister of Ryuzo's former big brother, appears before the two, the fangs of the "beast" begin to grow in the hearts of these calm men...!!