Skull Man and Garo then race to the estate of a reclusive old man named Kogetsu Chisato, who lives with a girl named Maya, who is mute and blind (she is always seen with her eyes closed). Overcome with psychotic rage, Skull Man threatens to kill Chisato, who not only kindly welcomes him, but has been looking forward to his arrival. Maya, however, telepathically persuades him not to kill Chisato, and reveals a shocking secret: Chisato is Skull Man's grandfather and Maya is his younger sister.