Misato, with a serious expression and an austere manner.
MISATO:“(Austerely) Good morning.”
imprimatur13: 2 possible reasons she's speaking so formally to Shin-chan:
1. She wants to rebuild her AT field, which had been damaged last time, when Shinji hit a nerve.
2. She's preparing for the demonstration, and for the level-headed-ness and formality necessary there. So, she's practicing on him.