Heart Kreuz is a popular clothing line for young girls that is featured in many of Hiro Mashima's creations. Elie loves this clothing so much that she wears it all the time. At some point in season 2, she addresses Heart Kreuz as the best clothing line in the world. Heart Kreuz symbols have found its way into many of the things and clothes in Rave Master, like Haru's jacket. Though Haru's clothing is constantly changing between long and short sleeves, there is always a cross like sign on each side. It appears to be a Men's version of Heart Kreuz. And if you look closely at the Rave that goes into Haru's sword, there is a small Heart Kreuz looking cross on it.