hera-hera（ヘラヘラ）
hera-hera describes a person acting in a frivolous, unserious, or overly casual manner, often smiling or laughing without sincerity.
kiraan（キラーン）
1. A sharp, sparkling flash of light
shiin（シーン）
1. Complete silence or stillness
bishi（ビシ）
1. A sharp, snapping or striking sound
gatan-goton（ガタンゴトン）
1. Sound of a slow, local train running on tracks
peta-peta（ペタペタ）
peta-peta describes a light, flat sound or motion created when something soft or slightly sticky repeatedly touches a surface.
beta-beta（ベタベタ）
beta-beta describes a heavy, sticky state caused by moisture, sweat, or a substance that clings strongly to a surface.
piko-piko（ピコピコ）
piko-piko describes a small, light, repetitive movement or sound, often associated with simple electronic beeps, toy-like motions, or rhythmic mechanical reactions.
koro-koro（コロコロ）
1. Rolling lightly
pachi（パチ）
pachi describes a short, bright snapping or popping sound produced when something lightly bursts, snaps, or makes a crisp spark-like noise.