During one's absence; the period when someone is away from home or workplace.
留守の間、植物に水をやってくれませんか。
Could you water the plants while I'm away?
留守の間に配達が来ても、インターホンで対応しています。
Even when we're away, the intercom handles deliveries.
旅行で留守の間、友人に郵便物を預かってもらった。
While I was away on a trip, a friend held onto my mail.