Sachi

One of the main antagonists of the game. She wanders around Nirvana, occasionally trying to kill Ayumi and others by herself or using Yoshikazu and her other servants.

Sachi is a completely malicious spirit who loves wrecking havoc everywhere she goes. Having no sense of right and wrong, she can't be reasoned with and she only acts according to her whim and emotions. She also speaks incoherently.

Spoiler

Her real name is Shinozaki Sachi. She is Sachiko's unborn twin who absorded her in their mother's womb. However, when Sachiko absorbed Sachi, she tried to fight back by biting her, resulting in her two teeth getting lodged near her heart and Sachiko had to undergo a surgery to remove them.