Complex sentence: He finds out that his childhood friend, Flare, has been selected by the Jagu as their annual human sacrifice; rushing back to Minofu, he finds that she is already gone and has been taken to the "Evil Place" up in the mountains.
Split into simpler sentences: He finds out that his childhood friend, Flare, has been selected by the Jagu as their annual human sacrifice. Rushing back to Minofu, he finds that she has already been taken by the Jagu to the "Evil Place" located in the mountains.