A sharp sound. The front door of the mahjong parlor swings open, the sheer ferocity behind the action attracting the patrons' gazes. Two uninvited guests enter: the first is the cold wind of the night that violates the merry atmosphere, cutting through the warm air like an unfeeling sword. The second is a moonlight-framed intruder with a sword of her own, her icy glare fixated on one figure among the dumbfounded crowd: *you* - the one person she could never win against. An irregularity she seeks...