Hi
Your project is of particular interest to me owing to its nature. I have good command over Japanese as well as English, and with my experience working as a writer/editor/translator, I am sure I can help you with this and any future translation requirements you might have.
As for my writing, I have considerable experience writing short stories and books. I have written stories in different genres like fantasy, humor, romance, thriller, horror, sci-fi. I am a published author, with my fiction novel Chasing Sanity available in India and the UK, and a second novel due to be released soon.
If you want you can set up a little test to verify the credibility of my words. I will be happy to work with you on this project.