It drops from monsters. I think I picked up a couple in the oddward/oddway? valley dungeon. The one with the two lions as bosses. I believe those aphid/spider things that shoot webs at you drop it. Random chance of course.
If it doesn't drop, there is always Sakuya and her antique/pawn/god knows what shop. Save game and reset game until desired result. It might work.
#5neo_ormaPosted 11/20/2010 8:33:35 PM
Spiders! Can drop Sparkle String or Strong String.
#6LordTapirPosted 11/20/2010 8:35:39 PM
Spiders in the forest are the easiest way.
#7RoxiiPosted 11/21/2010 4:55:13 AM
Privera : Crescent Path. Don't destory the port hole until you get the string.