Airi, who decided to live with her fiancé, discovers that the man who had been living there for a long time was her fiancé's brother who committed suicide. Drugs piled up and the criminal ● Airi moves to escape, but she cannot stop trembling in fear of an encounter. The Kuzu brother-in-law approaches Airi, who seems to be uncomfortable. 'That is a fateful reunion. No way, my sexual pet will become my sister-in-law.' I cannot escape from the Kuzu brother-in-law, who can only find meaning in life by continuing to commit to me.