Tokyo Underground

is a manga series by Akinobu Uraka and published by Enix. It became an anime series, produced by Studio Pierrot and shown on the TV Tokyo Network from April 2 until September 24, 2002. The TV series was released on DVD by Geneon Entertainment in the US and Canada, released as a boxset by Manga Entertainment in the UK and by Tokyo Night Train in Australia. It also aired in Canada on the digital channel G4techTV Canada, starting on July 22, 2007 at 8:30 pm ET/PT.

Plot
Under Tokyo's underground railway system is a world called Underground, populated by Elemental Users, people who can manipulate various elements. When the Maiden of Life, Ruri Sarasa, and her bodyguard, Gravity User Chelsea Rorec escape to the surface, they take refuge with swordsman Rumina Asagi and his bespectacled best friend Ginosuke Isuzu. During a battle with the flame-using Seki, Rumina is killed and then resurrected by Ruri. The revived Rumina finds he now has the power to manipulate air, a rare talent amongst the Underground people. Realizing Ruri is in danger, Rumina vows to protect her, even if it means going to the Underground to rescue her from her eventual captors before she gets sacrificed.