The latest chapter — chapter 503 — in the highly popular fantasy manga series "Fairy Tail" featured some very entertaining scenes which included a naked Lucy sprawled in a very provocative position.

Despite the laughs and blushes that were enjoyed by the latest chapter's readers, a more serious event is apparently going to take place as Natsu has transformed into his Etherious Natsu Dragneel (E.N.D.) form.

Natsu and Lucy have been taken prisoner by Dimaria, who had tied them both up in her lair with plans to torture them after she concludes that they were to blame for Brandish's betrayal. Dimaria teases Lucy by stripping her and then threatening to gouge her eyes out. Shortly after, Lucy wakes up with blood on her eyes as she witnesses Dimaria lying unconscious at the other side of the room.

After Porlyusica, Evergreen, and Brandish rescue Lucy, she then explains that something sinister and demonic has awakened inside Natsu. Natsu apparently transformed after he witnessed Lucy being tortured, and now he seems to have disappeared.

Natsu is then seen looking for his brother Zeref, but then runs into Gray Fullbuster.

The upcoming new chapter — chapter 504 — will be featuring Natsu's encounter with Zeref in his E.N.D. form, which is interrupted by his stumbling upon Gray. Natsu is apparently still able to recognize Gray in his new form.

Zeref is rumored to take advantage of the situation and play with Natsu and Gray's mind. Some reports have already predicted that Lucy or Juvia might interrupt their fight and stop Natsu before he is fully consumed by his E.N.D. persona. The chapter will likely also feature Erza and Eileen's confrontation in detail, so it might be a while until fans will witness the highly anticipated battle between Natsu and Zeref.

"Fairy Tail" chapter 504 — titled "Rift" — will be released next week on Wednesday, Oct. 5.