The key to the Kugane Tower for people using KB+M is that there are 3 different types of running jumps. Once you learn the timing for how to do a short, medium, or long hop, then its simply a matter of figuring out which jump needs what kind of hop. As far as the leap of faith, the timing for that jump is a LOT earlier than you might think. My first time trying it I panicked while sprinting and brushed the space key way before I planned to, and I was cursing myself all the way down until I landed on the vista O_O.

That being said, I wonder if Yoshida himself even landed this jump before allowing it to be included in the game. It just seems like a big middle finger to people who want the sightseeing log done. Even the hardest ARR jumps could be trivialized by capping FPS, but the Kugane jump is just pure sadism.