If anyone needs help I have extra 2 straws. But usually it isn't that hard to get. Just look for Giant Barley like plants and start wacking them. The more common drop is Giant Barley but you don't want that. You want Giant Barley Straw. Keep the Giant Barley though because you can hand them into the Farmer Manager later on (20 of them) to get free access to fields for materials later.
Lunia: Kanairi/Ruriri •ₒ• SOSBrigade •ₒ• Mabinogi: Rakusu (Mari) •ₒ• Vindictus: Lisolette