Tenkai Kyuu Bu Saku universe

Iijima Takeo's uncompleted saga 天界9部作 (Tenkai Kyuu Bu Saku (Celestial 9 Volumes)) was going to be 9 stories happening on various planets. Burai would come after Legend of the Runaway Ninja while Last Armageddon was a spinoff. Iijima furthermore published 12 Burai novels to supplement the saga.

Software (7)

Title	Developer	Year
Legend of the runaway ninja: Men with Wings (抜忍伝説 -翼をもった男たち-)	Brain Grey	1988
Last Armageddon (ラスト・ハルマゲドン)	Brain Grey	1988
Burai I (ＢＵＲＡＩ上巻)	Riverhill Soft Inc.	1990
Burai II: The Concluding Chapter (ＢＵＲＡＩ下巻完結編)	Riverhill Soft Inc.	1992
Legend of the runaway ninja Extra edition (抜忍伝説・番外編)	Brain Grey	1988
Youkai Henkikou Last Armageddon Extra Edition (妖怪変紀行 ラスト・ハルマゲドン番外編) Unreleased	Brain Grey
Last Armageddon Alien Picture Book (ラストハルマゲドンエイリアン図鑑)	Brain Grey	1988