Artist's commentary
They were this big when she woke up.
Tenshi: ...
Yukari: ...What? If you want to say something then...
Tenshi: Flatty.
Yukari: !!
She went to bully Yukari-chan. It's a random continuation to the previous picture of flat-chested Yukarin. Maaan, small Yukari-chan together with big Tenshi feels so out of place.
Flat Yukari-chan ＞post #1385490