The site owner nyankiti (にゃんきち) is a recluse.
The only way to contact with him is to leave your message at this site and wait for his reply.
I recommend you to learn Japanese in this opportunity. You will be able to communicate with members there freely in a few months.
Only a few months for your entire life![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
The only way to contact with him is to leave your message at this site and wait for his reply.
I recommend you to learn Japanese in this opportunity. You will be able to communicate with members there freely in a few months.
Only a few months for your entire life