He finds something extremely aggravating about Misato's apparent frivolity, but he inwardly restrains himself.
Shinji, wearing a serious expression.
Shinji is like, "I wonder where the emotions I felt yesterday have gone..."
MISATO (OFF):“I wonder where my bra and panties are.”
SE <<(OFF・FROM LEFT) Ding-dong>>
BGM End: B-16 rhythm only [MISATO]
Kendrix: Another telling bit of narration here - she may be a hero, but that doesn't mean Shinji's suddenly immune to embarrassment. "No one is a hero to his valet" etc.