Sparkling, Shining, Brand New
ピカピカ (pikapika) describes anything that sparkles, shines, or gleams. It’s a gitaigo (擬態語) — a word describing a visual state rather than a sound. Whether it’s freshly polished shoes, a brand-new car, or stars twinkling in the night sky, ピカピカ captures that eye-catching shine.
Gitaigo words describe states and conditions you can see or feel. ピカピカ specifically captures visual brilliance — the kind of clean, bright shine that catches your eye. It’s closely related to キラキラ (kirakira), but while キラキラ emphasizes continuous glittering, ピカピカ focuses on a clean, polished shine.
The Pikachu Connection
The world’s most famous Pokémon owes its name to this word. ピカチュウ (Pikachu) combines ピカピカ (sparkling) with チュウ (the Japanese onomatopoeia for a mouse’s squeak). So Pikachu literally means “sparkle-squeak” — a perfect name for an electric mouse that shoots lightning bolts.
Fun Fact
In Japan, first-graders are called ピカピカの一年生 (pikapika no ichinensei) — literally “sparkling first-graders.” The phrase captures the image of children in their brand-new school uniforms, carrying shiny new backpacks (ランドセル) on their first day of school. Everything about them gleams with newness.
Examples
In Anime
Pokémon (ポケットモンスター)
Pikachu's name literally comes from ピカピカ (sparkling) + チュウ (the sound a mouse makes). Every time Pikachu uses Thunderbolt, the screen goes ピカピカ.
Sailor Moon (美少女戦士セーラームーン)
Transformation sequences are pure ピカピカ — characters shimmer and sparkle as they transform, with light effects that defined an entire generation of magical girl anime.