Berserk: Golden Age Arc III - The Advent [TV]
Griffith is freed from prison but mentally and physically severely tortured and barely alive. At the moment he tries to end his life, a solar eclipse occurs, which draws him, Guts, Casca and the remaining army of his into another dimension, where a hopeless battle with powerful demons obliterates Griffith’s army. Griffith is given a choice to be reborn as a demon king, and he accepts. Guts tries to rescue him in this nightmare – eventually the solar eclipse ends, and with it the nightmare: Guts, Casca, and Rickert, who was away during the battle, were the only survivors, and Casca has gone mad.