Nice to meet you, dilemma!
Are you talking about his blog on Kansai Univ. Web-site, dilemma and hsuhs?
Yes, dilemma. You can send a message to Daisuke from the button "高橋大輔選手にメッセージを送ろう",
then you can see the form "message to Daisuke TAKAHASHI".
Can you see two blanks on the form?
The top one (narrow one)"お名前" is for your name to fill in.
The second one (wide one)"メッセージ" is for your message.
I tried now to type them (message) in English, and I could confirm to type at least 15 lines (probably, you can write more, please try before you send).
Then, check the button "掲載に同意する(agreed to be shown on this site except for your name)", or "掲載に同意しない(disagreed )".
After filling all up, click the button "メッセージを確認する". Then, you can see your name and message to be reconfirmed.
If you think everything is OK, click the button "メッセージを送る". Then, it's all done.
I am not sure if he reads all the messages, and it seems difficult he will give you a reply since, as hsuhs kindly told us, we can't send messages including
mail address or HP address, but at least it's worth of just sending your message! Good luck, dilemma!
And thank you for your kind help, too, hsuhs!
I didn't know we can't use those words on this message. Interesting discovery!