Under Tremolo Mountain, Part 3.The Knight of the Blue Sky happens to be Deerhound, who is not convinced that Haru is the Rave Master. To prove that he is the Rave Master, he must fight against Deerhound, showing his skills of the Rave Stone. Deerhound explains that he was human in the past, fighting alongside Shiba to destroy all the Shadow Stones. Deerhound then shows Haru the graveyard of all the Symphonia warriors that risked their lives to destroy the Shadow Stones. Deerhound gives Haru the Rave of Knowledge, but Deerhound is then stabbed by Schneider. Haru uses the Rave of Knowledge to defeat Schneider. Deerhound tell that Haru should collect all the Rave Stones to unlock all the powers the sword contains. Haru swears to obtain peace by the power of the Rave Stones, and Deerhound returns to his grave.