Nekomimi (猫耳) theme 1

Nekomimi theme 2

ecchi (エッチ) — Refers to softcore or playful sexuality, within the Western animanga world, in contradistinction to the word 'hentai' which connotes hardcore, perversion or fetishism. Works described as ecchi do not show sexual intercourse or genitalia. Instead, sexual themes are hinted at, and much is left up to the imagination of the viewer. Wikipedia

kemomimi (獣耳 hiragana けもみみ) — Sometimes written as kemonomimi (獣耳 hiragana けものみみ). Humans that possess animal like features, predominately human and any real animal characteristics are minimal, unlike kemono characters who possess a large percentage of animal parts in ratio with their human parts. Generally kemonomimi characters have ears and a tail which is animal-like. At times this is just part of their attire and can be removed at will.

meido (メイド) — Usually a female character who is employed as a maid or a waitress at a maid café, typically wearing a stylized French maid outfit. Males can be considered meido only if they are crossdressing in same outfit.

mizugi (みずぎ) — a woman's swimsuit or bathing suit.

nekomimi (猫耳) — a character with cat traits, such as cat ears, a cat tail, or other feline characteristics on an otherwise human body, usually female.

sukumizu (スクールみずぎ) — variant of swimwear intended for use by school students during swimming lessons in Japan.