Daimajuu Gekitou: Hagane no Oni

Synopsis

In 1999, a team of United Nations scientists stationed on the deserted island of Sansara attempts to create a new energy source, accidentally opening a portal to another dimension and releasing ancient creatures that are part machine, part organism. After three years have passed, Takuya Goroza returns to Sansara in response to a mysterious invitation from his college friend, Haruka Alford. He soon discovers that Haruka's real nature is far more complicated than he first assumed.