The Bi lawn child who works for a small wine shop of the Kojin management. Because husband, Toshiyuki of the working together was injured seriously, he employed young man, Nakajima of the one as a byte, and let a house freeload. The Bi lawn child was not able to come to like taciturn Nakajima very much. Such one day, co-worker, Akita of Toshiyuki go for hotel prostitution with Nakajima. Therefore it was a tattoo described in one cup of back of Nakajima that Akita saw. Next day, Akita tell a tattoo to a Bi lawn child. The Bi lawn child comes to be interested in Nakajima, and be gradually attracted by him with a mystery ass and the shade. Meanwhile, the case that Akita is stabbed in happens, and a wife, Youko of Akita and Adultery of Toshiyuki are found out and...The action that the Bi lawn child takes as expected?