Majutsu no Hate wo Motomeru Daimajutsushi: Madou wo Kiwameta Ore ga Sanbyakunen-go no Gijutsu Kakushin wo Kitai Shite Tensei Shitara, Kanashiku Naru Hodo Taika Shiteita......
The Greatest Magician's Ultimate Quest: I Woke from a 300 Year Slumber to a World of Disappointment·魔術の果てを求める大魔術師～魔道を極めた俺が三百年後の技術革新を期待して転生したら、哀しくなるほど退化していた……～
Kai Lekius, known as the Sanguinary King, ruled with calculated precision, unifying a divided land before entering a long sleep, entrusting his brother with governance. After 300 years, he awakens as a powerful immortal vampire, expecting a world transformed by advanced magic. Instead, he finds magic stagnant and a new nobility system oppressing the vulnerable. Despite his distaste for the unchanged and unjust society, he must delay his personal pursuits to address the suffering of his people and restore balance.