Is this artist actually Takamichi? I mean, as fas as I know, takamichi's page is http://www.amy.hi-ho.ne.jp/takamichi/F_TOP.htm , and even though the styles are very similar, I'm not really sure they are the same artist.

Different takamichi, one located at http://tml.sakura.ne.jp/

Then he needs a different tag.

Retagged accordingly.