This work depicts Hoshino Nami, who plays the role of an undercover investigator. However, there are criticisms regarding her lack of acting variation, monotone moans, and absence of action. On the other hand, the cute actress and the provocative mini-skirt attire received praise, and the intense train-based scenes of indecency have attracted attention. While it is a rare work featuring an investigator set on a train, some opinions suggest that there is room for improvement in acting skills and costumes.