Pluck
Stick your fingers in your mohawk and pluck each hair out, one by one.
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You want to pluck all your mohawk hair out because you're a techie (てき), and everyone at your techie job keeps making fun of you for your hair choices. "Techies should be bald!" your boss screamed. So here you are, plucking your hair out to fit in.
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.