SKK is one of Japanese input methods on Emacs. SKK was designed and created in 1987 by Masahiko Sato(a professor of Kyoto University). We will expand SKK in this openlab in accordance with the GPL. SKK is an abbreviation of `Simple Kana to Kanji conversion program'. Some people say SKK should be `simple' as its name indicates and should not be complicated in both of its features and structure of files. The goal of this openlab is that we can say, `SKK is still simple in its main features, but optionally exandable and still fast!'