Hello, this is my first time posting something on here. I was watching a little bit of Boruto yesterday on youtube and here’s the link to the episode: - YouTube
In the short video if you skip to around 1:11-1:15, Sarada (Sasuke’s daughter) is surprised to see Sasuke on a national holiday because he is usually busy doing undercover missions for the village. She says でもパパの境界(kyoukai)て来てくれるとは思わなかった。I searched up this word on jisho.org and it means “boundary.” I am not sure why they use 境界 in this context or is this just an expression in casual Japanese conversation?