Asuka Reo is a skilled spy for the Mikoto, a group of female ninjas that have been revived in modern times. She is skilled in ninjutsu to hide herself and offensive ninjutsu to defeat her opponents without touching them. She is strong-willed and has a strong conviction that she will never betray her comrades. But she is attacked by a cruel sexual torture. She has a chaste and feminine nature that only a female ninja can have, but it becomes her downfall and she suffers from a hell of orgasms.