Most of the girls are users of improbable weapons, but then, we have Rumi Nanase, wielding a wooden kendo sword. Why such weapon in particular? Well, it's a reference to her being part of a kendo club at her old school in ONE ~ To The Radiant Season, before she was transferred and forced to give it up.
Among the improbable weapons which may not be so improbable after all, we have Mizuka's schoolbag and cello (to reflect her musical taste), Mio's notebook (Which she uses to communicate), Ayu's winged backpack (A possible reference to the Spoiler Opening of Kanon, the 2002 anime, although that would be more of a Hilarious in Hindsight as EFZ was released in november 2001), sleepy Nayuki with a Keropi doll, Mai's ghost partner with a bunny-eared headband, sweet and cheerful Sayuri with a magical shape-changing wand, etc.
When Misuzu calls Yukito, what actually happens is that her crow partner Sora materializes as Yukito, which makes sense, since this is what happened in AIR, only reversed.
Fridge Horror
One of Akiko's supers has her catching a car speeding towards her with one hand, and slamming it against her opponent. Sure, the move looks cool but... What happened to the driver!? Did he/she escape in time? Or disppeared just as the car exploded?
Fridge Logic
If Misaki is blind, and Nayuki is asleep, how can they fight? Well it's not uncommom hearing about heroes who, while blind, can also be powerful fighters, such as Dare Devil, Kenshi, Toph, the guy from Blind Fury, etc. And there's also the ability to sense energy, so, why not? * Also, in Kinnikuman, King Muscle and Kid Muscle developed something similar to a "fighting while asleep" technique, due to them sleeping in the same bed. So, if Nayuki's style with kicks is pretty awesome for itself, seeing her fighting while asleep is really impressive.
As mentioned in the main page, Makoto uses a gun in battle, and can fire it in front of her opponent, but it counts as a melee attack. Any reason for that other than gameplay?
And then we have some weapons that could be quite implausible: Akane's hair, Ikumi with blood, Makoto with her gun and other gadgets, Mishio's spear, and Kano's Magic Staffnote Although this one may not be that implausible, as it's a reflection of her wanting to perform magic in AIR.
Mai fights with iaijutsu, even though her sword is not a katana, so it's quite impressive.
So, Why does Nayuki (Awake) fight only with kicks? Yeah, yeah... As a reflection of her being captain of her school's track team... but, can't help but think there's something else. Actually there is, it's because Kaori, her best friend, had previously taken all the punching; Kaori had previously debuted in the Bad Moon Edition, and awake Nayuki appeared in Memorial.
So, how potent is actually Akiko's jam? In Kanon it was already bad enough, but in EFZ the girls are powerful enough to hold their own in wonderful duels, and despite that, a single taste of the jam is enough to knock them cold! Well, just because your body is tougher, faster, more agile, etc, doesn't mean your palate will also be tougher, does it? An it's Played for Laughs anyway.
In AIR, Kano wears her yellow ribbon on her right wrist because she believes it will grant her magical powers; in EFZ, despite her being a strong fighter and powerful user of elemental magic, she still wears the ribbon.
