Seems like one of those pre-serialization teaser oneshots. Nagi is not just being an airhead, she actually needs two people coordinating to constantly look out for her constant fumbles. Not sure how to feel about a main character like that.
Thanks for the TL. A bit of proofreading might be useful:
on pg. 7 last panel, Tanaka became Takana
on pg. 9 last panel, Nagi became Negi