* BigLippedAlligatorMoment: Pretty much every time the School Newspaper Head makes an appears. It is pretty much nothing more than watching her insane antics of over enthusiasm for a minute or so before the plot goes on.
* IdiotPlot: The whole [[spoiler: Yuzurina not being his real sister could have ended right there in the pool when he announced her to the group. This is because Mei, who is fully aware of who his real little sister is could have just spoken up and stated it wasn't her. But she remains quiet the entire time on the subject]].
** She stayed quiet specifically ''because'' of the condition: if he had the power to protect her, Mei would reveal her. [[FridgeBrilliance And little had actually changed afterward, giving her no reason to reveal anything.]] Though there is no reason that she had to reveal who was his sister, just that [[spoiler: Yuzurina]] wasn't.