Choujuushin Gravion Zwei EP6 - Lamenting Rosario

Elji and the others suspect that Sandman is hiding something connected to the frequent Zelabaia attacks, and they sneak into the north tower of St. Germain Castle. There they discover the Sandman's mysterious past and the secrets behind the creation Gravion. Some of the mysteries behind Leele's birth are also unveiled, and when Toga tells her about it, she is so shocked that she throws herself into the Lake.