The term "anime-ending" refers to a specific type of adult content in the world of hentai or animated pornography. Hentai is an abbreviation of the Japanese word "hentai kibō", which means "pervert's hope" and it primarily involves anime characters engaged in sexual activities.
The term "anime-ending" specifically denotes a scene where the characters reach their climax or orgasm, often depicted as an explosion of colorful energy, usually during or after an intense sex scene in an animated adult film. This is a common trope in Japanese hentai and anime pornography that sets it apart from live-action pornography where such visual effects are not typically present.