オレンジも英語のサイトでほぼ同じ説明見つけたけど「いつでも暇だぜ」的なのはanytimeじゃなくany timeっぽい＞＜
Anytime vs. Any Time: What’s the Difference? - Writing Explained https://writingexplained.org/anytime-vs-any-time-difference