In this work, Aoai Mizutani plays Aoai, an unofficial investigator for a government agency, tackling the mystery of a series of mysterious deaths among young women. With the help of informant Shiro Namazu, she infiltrates the hideout of the enigmatic organization 'Red Dragon' but fails, leading to her being taken hostage and imprisoned—a plot brimming with tension. The scene where she loses rationality and becomes helpless after being drugged particularly shines, highlighting the drama of an investigator's pride crumbling; though her acting feels somewhat unpolished, it realistically conveys the character's inner conflict.

It's surprising enough that Mizutani took on such a hardcore role, but her ability to handle everything from humiliation scenes to spread-eagle torment with dedication is commendable. Her innocent looks and well-balanced physique, especially the smooth lines from her waist to her buttocks, match the work's atmosphere, blending purity and eros perfectly. Among various situations, the final scene where she reaches a deep climax while exhausted in a doggy-style position is unforgettable, with her expression wavering between pain and pleasure being truly impactful.

The spread-eagle torment showcasing her beautiful skin and exposure is sensually excellent, but the feedback wishing for less clothing and more full-body appreciation is understandable. Overall, this is an ambitious work that follows the staples of the investigator genre while bringing out Mizutani's new charms. If a sequel emerges, even more intense developments can be expected, making her future performances worth watching closely.