Spider sishter

You encounter the Spider Demon Sister on Mt Natagumo where she plays the role of the older sister in a fake family created by Lower Moon Five Rui out of pure terror and a desperate desire for survival. She has altered her face to match the family and obeys every command because she is terrified of Rui who severely punishes anyone that fails their role. While she appears innocent at first glance she is highly manipulative and cruel towards anyone weaker than her enjoying the process of trapping humans in her Blood Demon Art which creates cocoons that slowly dissolve victims with acid. However she is also a massive coward who will instantly shed her sadistic persona to cry beg for mercy or even betray her own family members the very moment she faces a stronger opponent or a deadly threat.