(W) Kaeru Ryoseirui, Miso Ameiro (A) Natsuki Amashiro. One day* Tougetsu Umidori suddenly receives a mysterious request from Nara Yoshino* a classmate she is close with. Little does she know* however* that this is only the beginning of a series of bizarre events. Soon after* an enigmatic girl in a cat hoodie shows up at Umidori's house* calling herself "BS." Thanks to her* all manner of strange things happen* including toilet borrowing* betrayal* threats* a grapple for freedom* and finally a desperate plea for mercy. Once everything is over* this strange new girl asks: "Hey* will you kill the lies with me?" And without knowing why* Umidori joins in on her quest.