In a war 4,000 years ago, the ruling race, known as the Karma, froze the world of Rune and emigrated to a neighbouring planet. Only now, as the ice is melting, have they been able to return. Dulk is a young man of exceptional power, who is in training to become a Shaman. Since he was young, he has had vivid dreams of the planet of Rune, despite the fact that he has never actually been there. When he finally goes to Rune, he will discover his powerful destiny in the planet's mysterious history!

In 2009 Imuri won an Excellence Prize at the 13th Japanese Media Arts Festival.