国籍は日本ではありませんが私は日本人だと思っていますって英語でなんて言うの？

You may be an American citizen yet have Japanese parents. Of course, your culture and family history would be Japanese although you are on paper, an American.

If your family is of Japanese descent, but you were born somewhere else you might say something like "I am ethnically Japanese", "I have Japanese family history", or "My background is Japanese". "Ethnic groups" are groups of people who share things like a nation, languages, culture, history, or ethnicity. If you look Japanese but are not in Japan, sometimes people will ask "Where are you originally from?". You may say, "I am a (your nationality) citizen, but my family is originally from Japan.".

To feel like you are, is to be completely and fully immersed in something. For example: "When I sing, I feel like I am music itself!" "I feel like I am flying because I am so happy" "I feel like I am the luckiest person alive!"

"I am not originally from Japan, yet I feel like I am Japanese at heart.' This tells you that said person feels deeply that they are Japanese even though they are not from Japan. ''I think I am Japanese even though I was not born there.'' This expression lets you know that said person feels that they are Japanese, no matter where they are from.

When you want to explain that you are not originally from Japan but consider yourself a Japanese person, then you can say: -I am so in tune with the Japanese culture and people that I consider myself Japanese even though I do not have a Japanese citizenship -I don't have a Japanese citizenship but I consider myself a Japanese person -I'm not originally from Japan but I consider myself a Japanese person.

To explain that you consider yourself Japanese, even though your citizenship is not Japanese, you can say: "I don't have Japanese citizenship, but I still consider myself Japanese." "I identify myself as a Japanese person, despite not having Japanese citizenship."