MPCR-004 - Pleasure-tortured female spies, endless orgasms

The third girl being tortured by a woman. Her reactions are cute and her acting is great. Since she has the longest screen time, I assume she's the main focus. After watching this, I checked out a lot of this series, but there's no work that surpasses this third girl. The other three weren't very interesting, so I'm giving it 4 stars.