Synopsis: Warning! Beware of the Dog

Through a strange turn of fate, the exorcist, Xiao Yu, is forced to live together with Obsidian, the succubus that murdered her adoptive father. However, she's shocked to find that this succubus has lost all of her memories?! Unable to accept this, Xiao Yu decides to keep close surveillance on Obsidian, yet Obsidian doesn't seem to mind. Instead, she starts to thirst after Xiao Yu openly and often teases her body to satiate her own hunger...