Interesting concept. I know I've seen this very cure put forth in other fanfics, but in a more humorous fashion. I'll be interested to see where you go with it. The characterizations should be interesting...
A technical note (but just my opinion): Please, please, do not do justified plaintext. Justified text works in a variable width font because the spaces between the words can be adjusted in fractional increments, and even the spaces between the letters if necessary. In plaintext, with a fixed width font, double-width spaces between words just doesn't look right. The triple-width spaces between sentences are also off-putting.
"Yes." She chuckled. "And since it is still a Jushenkyou curse,
Little nitpick: Jusenkyou. The "sen" is also the "sen" in onsen, and...gah. I'd better get back to studying for the JLPT....
See you at Ennien,
Robert
(a.k.a. Raja, (very) occasional writer of fanfic)