Refers to the initial judgment or feeling one gets upon meeting someone or encountering something for the first time.
第一印象はとても大切です。
First impressions are very important.
彼の第一印象はあまり良くなかった。
My first impression of him wasn't very good.
He made a good first impression on the interviewer.
She made a very good first impression.
It's risky to judge people by first impressions.
You should place importance on first impressions during interviews.