Youmu: I will defeat anyone opposing Yuyuko-sama. After all, the things this blade can't cut are... (starts imagining other characters)
Keine: I can just devour the history of ever being cut.
Tewi: I'm a robot from the future, and am made out of adamantium, which cannot be cut by anything. (lies)
Yukari: Slash at me in your dreams, and you best wake up and apologize.
Reimu: As the heroine, I somehow win every fight I'm in, even against clearly superior opponents.
Marisa: Mere swords cannot defeat the magic of love!
Youmu: When you think about it, Gensokyo's filled with a bunch of cheating jerks.