TC2 provides T-Code and TUT-Code input methods for Emacs users. T-Code
and TUT-Code are called "Kanji Direct Input Method", and designed to be
more efficient Japanese input method than Kana-Kanji translation.

For more infomation, please look into these web sites.

T-Code   -> http://openlab.ring.gr.jp/tcode/index.html
TUT-Code -> http://www.crew.sfc.keio.ac.jp/~chk/