こちらこそ

expression

it is I who should say so; likewise; same to you

A polite phrase used to return a compliment, thanks, or greeting, emphasizing that the feeling is mutual. Often follows ありがとうございます, よろしくお願いします, or すみません.

• 「ありがとうございます。」「こちらこそ、ありがとうございます。」

  "Thank you very much." "It is I who should thank you."

• 「よろしくお願ねがいします。」「こちらこそ、よろしくお願ねがいします。」

  "I look forward to working with you." "Likewise, I look forward to working with you."