Old schoolmates Haru and Gaku will do anything to achieve success. And success to them means earning a trillion dollars! But to do so, they’ll need to take full advantage of their own unique skills. Haru is a persuasive and confident speaker who can connect with anyone, while Gaku, although awkward, is an expert programmer. Will their combined talents be enough to make their dream a reality?

Young Dai embarks on an epic journey to become a legendary hero, training with his loyal companions to save the world from the resurrected Demon King.

Le monde, autrefois tourmenté par le roi démon Hadlar, a retrouvé la paix grâce à un épéiste appelé "Le Brave" et ses amis - le temps a passé... L'île de Dermline, une île isolée dans la mer du Sud, abrite des monstres libérés du Seigneur des Démons. Le seul humain de l'île, un garçon appelé Dai, qui rêve de devenir un héros, vit paisiblement avec les monstres. Cependant, cette vie change radicalement avec la résurrection du roi démon Hadlar. Une promesse faite à son professeur, des rencontres avec des amis, un destin auquel il ne peut échapper... Pour sauver une fois de plus le monde de la crise, les aventures de Dai, un garçon qui aspire à devenir un héros, commencent...

In a prosperous city named Russell City, an omen that threatens to shake its world begins to move within it. A man named Sword is the first to hear the first stirrings of the plot, and throws himself into a shadow war in order to expose it. His only clue is the key word "El Dorado." He meets Sophie, a woman searching for her missing older brother who has only left her with the same words: "El Dorado." With Sword having also lost his younger sister in the past, both are drawn together by the words, and work together to find out its meaning.