Shinji's concern is seriously felt. He becomes irritated, not realizing that she had missed the point deliberately.
SHINJI:“That's not what I meant!
I meant you, Misato-san, will...”
Sailor Star Dust: Episode 07 always felt somewhat underrated to me, but this exchange is so important. Shin-chan's already begun to think of Misato as family that he doesn't want to lose (again?).