It was Renjiro. He had been living in the building’s sub-basement for three months.

Renjiro is currently undergoing psychiatric evaluation at Osaka Detention Center. He has been charged with attempted murder. His defense? "She isn't my niece. She is a biological drone grown by the Kyōkai to harvest my memories."

: In many ninja stories, the uncle represents "old ways" or rigid traditions, while the niece/nephew represents a modern, more practical (or "dishonorable") approach to survival. Psychological Intensity