Aja

Welcome to Megalopolis! Once a peaceful Earth city, it's now a haven for criminals aided by the nefarious Alienizer arms dealer, Agent Abrella. Now, it's up to Ban Akaza and the Special Police Dekarangers to protect the Earth from the invading Alienizers and finally bring peace and justice back to the planet.

On her way to school, high school girl Nana sees a train accident. Then Nana and her friend Kanae start to come across various bizarre phenomena, including red fingerprints and a female spirit who 'lives' on the station platform. One day, Nana's younger sister is lost, and the only possibility seems to be that she had been taken by these spirits. The missing tracks. The predictions that a mysterious woman makes.