When I first met her, I introduced myself saying, 'I am Japanese.'

Nice to meet you, please let me introduce myself.

Nice to meet you, I'm Tanaka. Let me introduce myself.

I am planning to meet with my friend tomorrow.

He is a Japanese person.

He went to Japan for the first time.

He ate sushi for the first time.

It was only after talking to him that I understood how smart he was.

He started his self-introduction.

He introduced the new member to the team.