Secret Investigator is back!, to kick ass
The intro is awesome like always with this series. Mai Usami beats the crap of some guys at the beginning.
This time, Mai’s brother was an agent working for the government and he had infiltrated a location looking for somebody. Her dearly loved brother eventually ended up being killed in front of her. Mai went undercover and decided to avenge her brother’s death by becoming a secret investigator. Kill bill style baby!.
She embarks by herself on a journey to defeat the evil Shave corporation… However, Mai is captured by them and is injected with drugs that make her go wild – she has become their sex slave. The female investigator is (or was), by far, the most popular series from S1.