Instruction
You say stuff to a river, giving it instruction. This river is a new river so it needs you to say things, giving it instruction on what to do. Otherwise the river wouldn’t know how to behave.
くん
よ
None
Actually, you're giving this river instruction in the ancient art of kung fu (くん).
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.