Castrum Fluminis (Trial)

Castrum Fluminis is a Trial from Final Fantasy XIV: Stormblood, taking place in Yanxia, where the Warriors of Light confront Yotsuyu, who has fused with the Primal Tsukuyomi. Later, the player can return to Castrum Fluminis on a higher difficulty, as The Minstrel's Ballad: Tsukuyomi's Pain.