Guy
Inside the "Good Building" there's a single guy.
ろう
None
None
You talk to that guy. The only thing he does is offer you roe (ろう).
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.