so i think it's about Acnologia decendant or someone from his race because fire girl told him that she read a story about a fire mage who defeated a black dragon so she was telling him about Natsu vs Acnologia. maybe she's also Natsu's decendant she kinda reminds me of him (fire power and pink hair also same personality) and the zombie girl she look very similar to Minerva
so i think it's about Acnologia decendant or someone from his race because fire girl told him that she read a story about a fire mage who defeated a black dragon so she was telling him about Natsu vs Acnologia. maybe she's also Natsu's decendant she kinda reminds me of him (fire power and pink hair also same personality) and the zombie girl she look very similar to Minerva