This is a quote from the creator of my favorite anime Naruto & Naruto Shippuden. The Japanese symbol means fire. In the show, The Will Of Fire is something that all the shinobi of the hidden leaf village are suppose to have in order to never give up on their dreams and goals. I love this quote because I feel like its really positive and that everyone should possess the will of fire. If you never watched Naruto I suggest everyone watches it because I feel like this show has its incognito way of connecting to regular people through a ninja lifestyle.