fan service

Noun

fanservice (uncountable)

1. (slang) Elements added to a television program or similar entertainment that appeal to avid fans but are of little interest to outsiders.
   • For as much as the game is about Grady, it's also about tying up loose ends from the other games. If you're a veteran, prepare to be in hog heaven with the fanservice present.2008 January, “Silent Hill Origins”, in GameAxis Unwired, page 42

   Synonyms:

   fanwank

2. (derogatory, often, slang) The inclusion in a work of fiction of material, especially of a racy or sexual nature, which may or may not have relevance to the storyline and is designed merely to excite the viewer.
   • And because of that soy sauce, girls can get one of the few fanservice shots made for women in the entire history of the Ranma 1/2 series.2000, Ryan Omega, Anime Trivia Quizbook: Episode 1: From Easy to Otaku Obscure (Anime Trivia Quizbooks)
3. (slang, idol fandom) Special interactions from idols to their fans.
   • Fanservice is when group members interact with fans by taking their phones, accept gifts thrown on stage and acknowledge the people in the crowd.2022 July 21, “Moments with Mimi: K-Pop girl group Dreamcatcher knows how to make fans feel special, puts on an unforgettable show”, in The Post