After the bloody war of between two kingdoms that lasted for morethan a decade. The head commander of the Order of the Fallen Roses, Hildenn Lethrain, decides to retire and reclaim his youth after having the biggest contribution to the victory of the Castelle Kingdom. He decided to return to studying and become an academe instead of being stuck as a soldier for the kingdom for the rest of his life. Promising to never take a life ever again unless necessary, he shall embark on a journey to find his humanity. Will he achieve his dreams? or will he be dragged down to the deepest parts of hell?