As if nothing had happened; behaving or appearing as though an incident or problem never occurred.
彼は何事もなかったかのように朝食を取り始めた。
He began eating breakfast as if nothing had happened.
トラブルが起きたが、彼女は何事もなかったかのように笑っていた。
There was a problem, but she smiled as if nothing had happened.
事件後も街は何事もなかったかのように平穏を取り戻した。
Even after the incident, the town returned to peace as if nothing had happened.
彼は失敗を気にせず、何事もなかったかのように次の仕事に取りかかった。
He didn't dwell on the failure and, as if nothing had happened, started the next task.