Nishimoto Tatsuo, a rogue 10 years old magician, who was treated harshly by his own family. After He was born, he never saw his mother. He was tortured by him family just because he was thought to be a demon. He then went rogue and got a bounty of 100 Billion Kata. He then unlocked a skill called 'The Voice of The World', which helps him to become stronger. After escaping from the capital. He found many friends and made a group called 'Shadow Dragon'. Then he still works on to get rid of evil peoples, making friends and becoming a hero.

There are 3 boys named Sam, Rikito and Tatsuro. And 3 girls named Riku, Arisa and Iroha. This is about there love story. Al though many problems acquired but they solved it. They go to the same highschool.