"Everyone would start gathering at Ashina castle and a rather rowdy party would ensue. Every time that happened, I'd leave Lord Dogen all on his lonesome, and I'd stroll around the rear of the castle."
"Behind the castle? Why?"
"..... Well.... I'd go to the Fountainhead Spiral... there is a large spiral of clouds visible in the distance. Lightning bolts would race from one cloud to the next. In fact... I distinctly recall Master Genichiro practicing his swordsmanship there."