I found an article that actually gives details of the plan.
html/news/2005/02/28/20050228org00m300063000c.html | パソコン教室|開業|起業|独立|アントレ|フランチャイズ情報サイト
And translated a bit of it.
窶ーF窶厖??藩懌?廃窶「ツェ窶禿ャ窶堙??堙債、窶伉セ窶配ナ地窶儺ツ債ク窶堙娯?吮??窶堙?椎ス窶儺ツ債ク窶堙ーナステ・窶牌窶堙遺?禿壺?「W窶堙嫁断窶堋ー窶堋スツ。5窶扼ナ津」窶堙懌?堙
窶堙嫁椎ス窶禿岩?儺ツ債クニ陳哉畜ニ鍛ニ暖窶堙ーナ?J窶敖ュ窶堋オ10窶扼ナ津」窶堙可人ナ?テ披?堙娯?卍キナ?テコ窶佚伉催昶?堙俄?「K窶牌窶堙按絶?ヲ窶堙「ニ竪ニ値ニ停?ケニ樽ツー窶堙固?m窶「テ
窶堙嫁?テ問?堋キ窶堙ゥ窶ケZツ術窶堙固?m窶板ァ窶堙ー窶禿塲スw窶堋キツ。20窶扼ナ津」窶堙俄?堙債、窶猫ツ人ナ?テョ窶冢窶堙固?J窶敖ュ窶堙俄?吮?ヲナスティ窶堋オツ、窶伉セ窶配ニ竪
ニ値ニ停?ケニ樽ツー窶堙ー窶藩懌?廃窶堋オ窶堋ス窶敖ュ窶彭ナス{ツ静昶?堙固?J窶敖ュ窶堙?ツ青キ窶堙ィツ最セ窶堙ア窶堋セツ。
In the field of space exploitation, from among the solar system investigation, we hold
exploration of the moon to be an important aim. In five years to develop a lunar surface
robot lander, in 10 years time to aim for development of techniques required to ensure
energy, water &c. to support long term residence of humans (on the moon). In 20 years
time to embark on development of a manned base, also including development of solar
energy electricty generation facilities.
窶堋ア窶堙ェ窶堙ァ窶堙固ステ?ナ陳サ窶堙娯?堋ス窶堙淞、窶猫ツ人窶ーF窶厖??ヒ??慊ョ窶堙俄?堙?ツ静鞘?ケテ俄?廬窶堙嫁ステヲ窶堙ィ窶枠窶堙楪。ツ催?鞘?ー窶堙?窶扼ナ?テ披?堙債、7ツ坂??窶ケ@
窶堙娯?佚??堋ソツ湘」窶堋ー窶堙可青ャナ津キ窶堋オ窶堋スH2Aニ陳哉単ニ鍛ニ暖窶堙個信窶版?ツ青ォナ津シツ湘」窶堙「ツ坂?伉催帚?ーF窶厖?湛ニ弾ツーニ歎ニ停?。ニ停?懌?堙??堙娯?ケZツ術ツ習
窶慊セ窶堙ーツ進窶堙溪?堙ゥツ。10窶扼ナ津」窶堙俄?堙最スナクナ?テコナステ・窶氾哉陳哉単ニ鍛ニ暖ナ?J窶敖ュ窶堙??ーF窶厖?湛ニ弾ツーニ歎ニ停?。ニ停?懌?堙俄?「ツィナス窶倪?堙ー窶尿窶倪?披?堋キ窶堙ゥ
窶督ウツ人窶「テ「窶ケ窶ケ窶ケ@ツ「HTVツ」窶堙固ステ?窶廃窶ーツサツ、20窶扼ナ津」窶堙俄?堙坂?「テ?坂?倪?堙姑湛ニ馳ツーニ湛ニ歎ニ槌槌暖ニ停?ケ窶堙娯?堙ヲ窶堋、窶堙遺?猫ツ人ツ催?スg
窶廃窶尿窶倪?披?ケ@窶堙娯?愿?スツゥ窶堙??堙固?J窶敖ュ窶吮?ヲナスティ窶堙ー窶禿壺?「W窶堙俄?堋オ窶堋スツ。
In order to realise the above, and to aggressively come to grips with manned space
activities we have decided on the following objectives.
1 - In the first five years improve the reliability of the H2A rocket whose seventh flight
succeeded and proceed with acquiring technological skills by means of the
International Space Station.
2 - In 10 years time, develop next generation rocket and bring the ISS unmanned cargo
transport (HTV) into use.
3 - In 20 years time, embark on the independent development of a manned space
transport such as America's space shuttle.