Yuka Takemura

1615. Ninja Sarutobi Sasuke is assigned the task of finding a hidden treasure that will restore his clan to their full power. However, sexy ninja warrior Kagero stands in Sasuke's way. Complications ensue when a sudden time warp occurs and both Sasuke and Kagero find themselves thrust hundreds of years into the future to Tokyo, Japan in 1984. (imdb)

One evening, a porn projectionist seems troubled after seeing a movie in which a man wearing a red snake tattoo on his thigh rapes and kills a schoolgirl in the woods. The projectionist bearing a similar tattoo goes to the distribution company to find out who wrote the script and learns it's a young OL called Chioko Yamazaki. He thinks the girl witnessed a rape and murder he committed in the past in similar circumstances. He confronts her but she seems to know nothing about the incident.