そんなわけで

Meanings

1

therefore; for that reason; so

usually written using kana alone

A common conversational conjunction used to introduce a conclusion or result based on what was just said. Often used at the beginning of a sentence.

電でん車しゃが遅おくれた。そんなわけで、遅ち刻こくしました。
The train was delayed. So, I was late.
彼かれは急きゅう用ようができた。そんなわけで、今日きょうは来こられないそうだ。
He had something urgent come up. For that reason, he says he can't come today.