Some Digital Monster Card Game promotional material, such as the flyer pictured on right,[1] provides the following Back Story narrative for Booster 14. It focuses on the nature of Dukemon: Crimson Mode, and includes a teaser for the concepts of Hybrid Digimon and Legendary Spirits which would debut later that year (also hinting at a connection between them and Dukemon: Crimson Mode).
⇨ Japanese And so a miracle that transcended the life-forms humans and Digimon came to pass. The resonance between the Holy Knight Digimon Dukemon and ZERO-ARMS: Grani. There is no question that it was the Spirit of the human Digimon Tamer that mediated this. The body of Grani, the sky-conquering swift steed, was converted into crimson armor, and the data structure of Dukemon integrated Grani. Thus, the Final Ultimate Crimson Knight, clad in shining wings, was born. Through the divine spear of light Gungnir and the divine sword of light Blutgang in its hands, the world was once again saved from the threat of collapse. And the curtain was raised on the era of Hybrids, in which Digimon are guided to a new evolution by humans and Spirits...
⇨ English それは、人とデジモン生命体が起こした奇跡だった。聖騎士型デジモン=デュークモンとZERO-ARMS=グラニの感応。媒介したのは紛れもない、人間=デジモンテイマーの精神力だった。覇空の駿馬グラニはその姿を灼熱の鎧装と化しデュークモンはデータ構造をグラニと一体化させた。輝く天翼を纏いし最終究極紅蓮騎士の誕生である。その両手に携えた光の神槍と光の神剣により世界は崩壊の危機を再び免れるのであった。そして、人間と精神力によってデジモンを新たな進化へ導く超融合の時代が幕を開けることになる・・・・