'Fairy Tail' chapter 513 spoilers: Fairy Tail guild members learn truth about Natsu and Zeref

As seen in the previous chapter, Sting was clobbering Larcade before the Spriggan 12 member uses his Eternal Sleep of Death magic. Sting struggled to stay awake, but Kagura managed to aid him so he could enter the world of shadows and turn the battle back to his favor. Meanwhile, Lucy starts to panic because Natsu's condition was getting worse. But Natsu is still inside the world within his heart. What's going to happen next?

Sources say "Fairy Tail" chapter 513 may feature Happy in the hot seat after he let slip that Natsu's life is somehow tied to Zeref's. Titled "Flower Circle," the chapter will see the Fairy Tail guild members faced with the dilemma of stopping Zeref at the cost of Natsu's life.

Reports note the upcoming chapter will continue to show Natsu's journey inside the world within his heart, and it will explore further the connection between Lucy and Anna. Well, fans already know that Lucy is a direct descendant of Anna, so it will be interesting to see what else will be revealed in the upcoming chapter. Some fans have been saying that perhaps Lucy is the reincarnation of Anna.

Meanwhile, Natsu just found out that Anna was the one who knitted his scarf. Clearly, Igneel didn't knit it for him — although that would have been a sight to behold. But while Natsu is taking a stroll down memory lane inside his heart, his physical body is deteriorating fast. Can Lucy do something to save Natsu? After all, her ancestors were Celestial Spirit mages.

Where are Erza and Irene? Will readers see the two of them in chapter 513? What is their connection? Are they also related in some way?

Will Natsu finally wake up? Find out when "Fairy Tail" chapter 513 comes out next week. Meanwhile, readers are advised to take everything with a grain of salt since details for the next chapter are yet to be revealed.