Rune  (English, Paperback, unknown)

Best friends Chiri and Dai stumble into a forgotten realm, tormented by the evil Shadow King who yearns to spread terror and unleash wild magic on everyone. But will these best friends, with the help of the druids, warriors, and magical goats they encounter be able to find their way home? And more importantly, can they evade the darkness that was awoken on their arrival and seal the pathway between worlds before it is too late?