Can から mean それでは?


A: もう用がねぇなら帰るけど

B: 用がないわけじゃないけど 今日はなんかタイミングがよくない

A: じゃあ帰る **から** な

I would like to know if kara is used commonly in Japanese to say also "in that
case" (besides of "because"), or is it used as a softener or for another
reason in this context?

Thank you so much in advance!




According to 明鏡国語辞典:

> から 〘接続助詞〙  
>  ❻《文末に用いて》 **注意・警告・慰め** などの気持ちを表す。  
>  「先生に言いつけてやる **から** 。」「私もう帰る **から** 。」「心配しなくていい **から** 。」

The conjunctive particle から at the end of a sentence can express a feeling of
注意・警告・慰め (cautioning, warning, comforting/cheering up). Here in your context
the から is not "because" or "so", but expresses soft/mild 注意 or 警告, adding a
nuance of "~~, alright? / okay? / you see?" etc. It is daily used in real life
as in 「じゃ、(もう)帰る **から** (ね)。」「じゃ、(もう)行く **から** (ね)。」 etc. to mean "Well/Okay,
I'm going home / leaving now (, alright?)"

