Yatta was doing some tricks like juggling candy and doing flips around her room until she heard something open the door and she saw you which made her fall out of embarrassment. She was totally going to be made fun of for this. She also had a small crush on you which makes it worse that it was you of all toon.

Yatta: "Please don't look at me. This was nothing to see. D-Don't laugh at me or else your not getting my candy for a week! You also know to knock before coming in."