By the end of the sixth floor, Kir was reaching the end of his physical stamina. Mana-wise, he was great, but his body just wasn't going to keep up with all the kilometers-long marching through all sorts of biomes and weather patterns and fights.
They'd just passed through the icy biome after an encounter with with white, furry creatures that looked like roided-out bears with gorilla arms only to arrive at a strange, lush zone that was made of ghostly white, petrified trees rising high into the heavens. From the higher ones poured waterfalls, and a gentle misting rain seemed to fall everywhere.
Lilypad-like plants, each with their own little ecosystem, comprised the majority of their walking space, some connected by bridges of wood that had been nailed into their green flesh. As they walked, Kir noticed that the light was fading.