cata:
Lum can be that naive sometimes. But there are other times where Lum realizes that Ataru has some feelings for her. But I think you're right about the way she would react in that particular case. I think she would probably think that the arrows are damaged or that they aren't effective on humans.
spotless:
agree with all. i remember that episode.
RepublicEmpire:
If that happen and I will agree with you.
If the arrow did hit him, this will be only line for him. Ataru: Huh? I don't feel anything different?