expression
for better or worse; luckily or unluckily
Used to introduce an outcome that could be seen as either fortunate or unfortunate, often at the start of a sentence.
幸か不幸か、その日は雨で試合が中止になった。
For better or worse, the match was canceled that day due to rain.
幸か不幸か、彼はその知らせを聞いていなかった。
Luckily or unluckily, he hadn't heard the news.