These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Anvilicious: No chance is spared to emphasize the importance of having fun.
Dude, Not Funny!: Ai's violent urges are rather questionable, but luckily she loosens up a lot later on.
Les Yay: Futaba and Hikari have a lot of this, such as Hikari's habit of standing very close to Futaba, holding hands with her and gazing into her eyes, especially in the first volume. Though Futaba seems to inspire this quite a bit from others as well.
Mato-sensei giving Futaba a foot message comes off this way because of dotty's expression.