Tenmei no Tsuki - Hayo no ken side story - 3 Hayo No Tsurugi Gaiden (Cobalt Bunko) [Light Novel]

[Machine Translation] The Dark Lord entrusted Laethrile with the founding and peace of a new world and succeeded in bringing it to fruition. The world was supposed to have a permanent peace. However, there was a concern in his mind. The world of the higher-ups, where the Creator once existed. The "negative crystals" of the muddy darkness that had destroyed even the Creator were beginning to exert pressure on that world. The Lord of Darkness made up his mind. He decides to stop the "negative crystal" with his life. The "Sword of Destruction" series is now complete.

新たなる世界の創立と安寧をラエスリールに託し、その実現に成功した闇主。世界には恒久平和が訪れるはずだった。しかし、彼の脳裏にはある懸念がよぎっていた。かつて創造主が存在していた上位者たちの世界。創造主をも滅ぼした泥闇という「負の結晶」がその世界から圧力をかけ始めていた。闇主は決意する。生命をかけて「負の結晶」を阻止することを。『破妖の剣』全シリーズ、堂々完結。