Yu Yu Hakusho S01 E18 Seiryu, the Blue Dragon

Two of the four Saint Beasts are dead -- or so Yusuke and his team believe! But in the chamber of Seiryu, a Beast who can trap his enemies in ice, an unexpected guest arrives. How can two Beasts in one room be stopped? And why is Hiei, a cold-hearted rogue, suddenly beset with emotion?