This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
I was startled by what Kana said and couldn't help but stand still for a moment.
This is just a still frame, but it looks like it's moving a little. What an interesting picture.
In Japanese archery, you need to stand still for a moment with the bowstring fully drawn back before releasing the arrow. Is it the same in Western archery?