Watch anime online, stream anime episodes online for free.Watch Planetes Episode 23 English version online and free episodes. Anime Episode guide, Chapter Planetes Episode 23 English dubbed Nor Iron Bars a Cage It turns out the prison planet can teleport itself. Sternum is revealed to have been Femur’s brother. Tekla and Pyrus must confront Lord Mantle, who wants to rule the Alliance. Mantle shuts down the defenses for the entire Alliance endangering the fleet.