Humanity
This leader has two things that remind him of his humanity: his shoes, and his hat. These two things remind the leader of his humanity because humans are the only ones who wear shoes and hats.
じん, に
None
None
Another thing that reminds you and the leader about your humanity is wearing jeans (じん). Jeans are the go-to legwear for many people, and no one but humans wear them. Jeans are another great symbol of humanity.
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.