を介かいして

expression

through; via; by means of

Indicates an intermediary, medium, or channel through which something is done or transmitted. Often used with nouns like 人, 会社, インターネット, テレビ.

• 彼かれとは共きょう通つうの友ゆう人じんを介かいして知しり合あった。

  I got to know him through a mutual friend.