Thank you for reaching out to us again and sorry to hear, that you find yourself in a difficult situation.
I am afraid, that most probably none of our experts speaks Japanese being able to get in touch with you more closely.
If I understand you correctly, you are staying at a Japanese airport right now? What exactly is your plan?
To be honest, I am also not familiar with current structural human rights issues/violations in Japan, which makes it even harder for me to get your overall situation.
However, if you want to check this website, you will find a list of human rights organisations/NGOs active in Japan. I hope you find someone who can support you better.
Take care and all the best,