|Air Date||October 23, 2013|
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Sunset is the 4th episode of the Coppelion anime. It aired on October 23, 2013.
After a wild chase which the jet attempts to kill them, Ibara manages to shoot it down which crash lands into a lake stadium. When the Coppelions arrive at the stadium, the mercenaries have just died. As they investigate the jet, they discover barrels of radioactive waste in the lake which they know realize what is going on. The mercenaries were working with Yellow Cake, a recycling waste company who have been secretly dumping radioactive waste from around the world into Tokyo, which has cause the recent rise in radiation levels, knowing no one would be coming there. Ibara becomes angry upon learning about this while Dr Denjiro feels everything is his fault and wants to atone himself. Fearing the Dr Denjiro might kill himself, Ibara tracks him at a shrine only to find him removing his helmet. With only ten minutes before the effects of the Ether's anti-radiation is gone, the Coppelions quickly drive him to the airfield to be evacuated by Onihei. However, the helicopter has yet to arrive. Dr Denjiro tells everyone to just let him die to atone for his sins but Ibara refuse. With a few seconds left, Onihei's helicopter arrives where he throws another Ether bullet to Ibara to save Denjiro. As the helicopter gets Kawata and Ayame on board, Onihei helps Denjiro get on board despite the Doctor was responsible for his family death during the meltdown. Denjiro apologizes to girls for the world they now live in and gives them a list of the other survivors in Tokyo. As the Coppelions continue their mission, Aoi and Taeko assures Ibara they will always be there for her.
Characters in Order of AppearanceEdit
In the scene where Ibara Naruse, Aoi and Taeko are looking for Dr. Denjiro, you can briefly see a gollum or a statue that resembles to Chewbacca's head from the Star Wars franchise.