You want to get your fingers on the humble stool, so you dedicate your life to search for it. Wait, the humble stool? You know, like the holy grail or the ark of the covenant, but it's called the humble stool. It's from some bible or something, I promise.
You search and you search and, unfortunately, you spend your entire life searching and you die without finding the humble stool. But don't worry, your soul (そう) comes back and now you get to continue your search but with afterlife powers!
Currently there are no similar looking kanji which exist in the WaniKani learning system