RBK-084 Investigator, until you fall... The debauchery of aphrodisiac training Westono Emie

[In pursuit of her sister's enemy, Mantis...] Rio Saionji is a member of the Special Crimes Division. She lost her older sister Mao five years ago. Mao also belonged to the Special Crimes Division and was an excellent investigator. However, when she was conducting an undercover investigation for the underground criminal organization Mantis, she died due to an accident during the investigation. Her details have not been disclosed.