Ever since she appeared in Chapter 483, Lady Eileen has become of one "Fairy Tail's" more compelling characters. Now it seems the true identity of this enigmatic fighter will soon be revealed in "Fairy Tail" 487.

The previous chapter was quite the fan service, as "Fairy Tail" creator Hiro Mashima gave fans everything they've always wanted to see in the manga. There was that big fight between Gajeel and Bradman, Levy joining the fray and helping Gajeel, Zeref showing concern over Lady Eileen, while the aforementioned Lady, who also goes by the moniker "the Scarlet Angel," directed the others to join the battle and prepare for the arrival of the third guest.

But what really captured the interest of manga fans is Eileen's comment that the fourth guest would also be arriving soon and it's someone that she has to deal with personally.

This cryptic comment has had "Fairy Tail" fans speculating on what Chapter 487 would bring. Numerous theories have been put out on the manga's official Reddit Predictions Thread. One user predicted that Gajeel and Bradman's tiff would continue, while another believes that Acnologia won't appear in this chapter yet. One Redditor mentioned a previous theory about how the seven seals were actually referring to the seven Dragon Slayers.

Over at the Manga Stream discussion board, one fan, who goes by the name Dian Glass, pointed out that when Acnologia killed God Serena, he mentioned that there were "5 more to go." However, there were only four known Dragon Slayers at the time that fans know about — Natsu, Rogue, Sting, and Wendy. Could Eileen be the fifth Dragon Slayer?

A lot of fans seem to be buying into this theory, particularly after Eileen's excitement at the prospect of Acnologia's arrival and her decision to personally put an end to him. There are theories that Acnologia's arrival in Chapter 487 will unleash Lady Eileen's powers and reveal her as a Dragon Slayer.

Lady Eileen's confidence and Zeref's observation that he feels something different in the magic that's flowing through the land teases that "Fairy Tail" Chapter 487 will give fans another memorable chapter.