Level
Grade, Rank
There are pieces of thread on each escalator showing you what level they go to in your school. Each escalator takes you to a different grade, so make sure you follow the right thread or you'll end up in a class that's either way above or way below your level.
きゅう
None
None
You want to see what the highest level is, so you go up the wrong escalator. At the top you find a giant cucumber (きゅう).
An update is needed before you can continue but you have more than one WaniKani tab open.
Finish up what ever you are doing on the other tab(s), then close them to continue.
The update will complete automatically once the other tab(s) are closed.