When your fingers move like that, you know it's an omen of a challenge that will face you soon in the future.
In your finger, you see a challenge. And... if you look closely, you can see the fast movements of your fingers forming the outline of Mrs. Chou's (ちょう) face. Oh no, the challenge is going to be Mrs. Chou!
Currently there are no similar looking kanji which exist in the WaniKani learning system