fanservice

Meanings

1. Elements added to a television program or similar entertainment that appeal to avid fans but are of little interest to outsiders.
2. 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.
3. Special interactions from idols to their fans.

Etymology

Phono-semantic matching of Japanese ファンサービス (fansābisu), itself a wasei eigo (和製英語; pseudo-anglicism) derived from fan + service.