Radioactive

Two anime characters, one with pink hair and the other with green eyes, lean in for a kiss against a dark background illuminated by a bright, warm light between them. The scene transitions to a wide shot of a sunset over a town, then to a close-up of a character's eye in tall grass, followed by a character falling through the air above a city, a massive mechanical arm descending upon the town, and finally a close-up of a character in a cracked, white helmet with a subtitle expressing regret.