Kahhori knew The Forbidden Lake contained a great power so she went searching for it. She found a lake but it didn't really seem all that special then she heard gunshots from her village. When she arrived at her village it was under attack by the Spanish who spotted her. She ran and fell through the ground and ended up at the actual forbidden lake and she ended up falling into it while being shot at. The Tesseract in the lake teleported her to the Sky World where she learned to use her powers.