The exam assignment that Grindstone students dance is called the Whirl of Needles.
The thunk of the steps echoing in the hall becomes less precise with each additional piece of accessory.
Overwhelmed sighs escape from the students observing, but the examiner's eyes are sharp and sober.......

Grindstoneの生徒が踊る試験課題は”針の渦”と呼ばれる。
ホールに響くステップの音は装身具が追加される度に精細さを欠いていく。
同席の生徒達からは嘆声が漏れるものの、試験官の表情は冷静だ……。

差分は顔責め・乳責めです→
https://oet.fanbox.cc/posts/9017240