そういうことか

expression

I see; I get it; so that's why

Expression of realization or understanding, often after hearing an explanation. Equivalent to 'Ah, so that's what it is' or 'Now I understand'.

• ああ、そういうことか。やっと分わかった。

  Oh, I see. I finally understand.

• 彼かれが遅ち刻こくした理り由ゆうを聞きいて、そういうことかと納なっ得とくした。

  When I heard the reason he was late, I thought, 'So that's why,' and was convinced.