ボッス王国での戦いでボッジたちの前に立ちはだかった冷酷非情なオウケン。心優しき青年が、なぜ不老不死となり、そして罪人となったのか。その過去が明らかに・・・
Ouken's past is revealed as his desire to become stronger and put an end to his father's cruel reign is recounted. Over the course of the hard-fought war against the Gigantes, the prince distinguishes himself by his conduct, until one fateful day.