Tona-Gura! Concepts

Bathing Scenes, while occasionally meaningful to plot or character development, are generally excuses for fan service.

Fan Service is often a sexually provocative moment or pose that takes place in manga and anime. It usually has no real purpose to a story, and serves as a lurid visual.

Used frequently in Anime to either recap past events or provide a back story for a character, either their origin story or their off-screen training of new attack. Sometime and entire episode/chapter would be a entire flashback.