I am Japanese, but please do not send in Japanese using web translation.
You can send messege in English. I will understand this message.

If I need a reply, I am returning a reply within a few days.
If you do not receive a reply from me even after the number of days, try contacts elsewhere.

If you are using Facebook, you can also contact Keiichi Shiga.
Facebook Keiichi Shiga https://facebook.com/keiichishiga