The phrase '手ぐすねを引いて待つ' translates interestingly to English. It's not just about waiting, but actively preparing with anticipation. The closest equivalent would be 'to lie in wait' or 'to wait with bated breath,' but neither fully captures that specific Japanese nuance of physical readiness.
In gaming communities, you might hear 'camping' used similarly when players prepare ambushes. But culturally, there's a poetic tension in the Japanese expression that's hard to replicate. The image of tightening bowstrings conveys both patience and imminent action, something English often separates into distinct phrases like 'on standby' or 'primed and ready.'