Given that Youmu is practically tied with Aya as the fastest of Gensokyo, this is not overkill. It's precaution, and a likely necessity to saturate the area with fire.
Zekana said: I feel bad for all those fairies. only 1 charge up slash from youmu and about 90% of them will die.
But that 10% will be behind her, and flanking her (given the nature of her charged slash from TD), from where she's wide open to a precise shot to the base of the neck. She's got to pull out her best speed now...
Fun fact: Fairies outnumber all of the humans and youkai in Gensokyo combined! Its canon that even Reimu has taken hits from fairies when they attack her in sufficient numbers! That's why Fairy Wars started in the first place. Sunny Milk of the Three Michievous Fairies figured if they could get all of the fairies in Gensokyo to obey them, they'd be able to defeat anyone through sheer numbers! Fortunately for Gensokyo (and Reimu) the Three Fairies have the attention spans of gnats on crack and they were drunk when they came up with that plan in the first place!
OmniGman said: Fun fact: Fairies outnumber all of the humans and youkai in Gensokyo combined! Its canon that even Reimu has taken hits from fairies when they attack her in sufficient numbers! That's why Fairy Wars started in the first place. Sunny Milk of the Three Michievous Fairies figured if they could get all of the fairies in Gensokyo to obey them, they'd be able to defeat anyone through sheer numbers! Fortunately for Gensokyo (and Reimu) the Three Fairies have the attention spans of gnats on crack and they were drunk when they came up with that plan in the first place!
not to mention during the full moon faires go EX there really lucky they never had to deal with a EX Cirno.
OmniGman said: Fortunately for Gensokyo (and Reimu) the Three Fairies have the attention spans of gnats on crack
This is actually a common feature of all fairies. The Great Fairy War was delayed by several months because after the initial incident which sparked it, because Cirno was having too much fun trying to freeze the lake and didn't remember she was supposed to "get back" to the three.
Without Cirno, this picture would be in the OVERKILL pool because you wouldn't need someone as powerful as Youmu to handle that amount of fairies ;-)
(Has anyone tried to count how many nameless fairies get shot during average Touhou game? I'd say thousands.)
With Cirno among them we probably have a real fight.