"Attack on Titan's" upcoming episode will be titled "Border Line," and it is speculated to feature the given punishment that Elodian traitors received when they went deep into Paradise Island. This will shed more light on the origins of the Titans.
A big titan population can be observed within the Shiganshina District, which is located south of the wall. Fans are speculating that the traitors caught by the Marleyans are injected with a titan serum to kill them, and their bodies were dumped over the other side of the wall.
It is also rumored that the Elodian soldiers will afflict bodily damage to Grisha in order to extract the information that they wanted, in order to overthrow their regime. It will also shed some light on how the father of Eren became one of the Titans that await outside the outermost wall called Wall Maria.
Others have reported that Eren, Armin, and Mikasa will be imprisoned, while an impending battle will let the fans see Armin turn into a Titan to help Eren and Mikasa escape captivity. They were imprisoned because they decided not to follow the orders to let Armin die.
Dina Fritz, the first wife of Grisha, became the Smiling Titan. This is the same gigantic humanoid that devoured Carla Yaeger, the second wife of Grisha and the mother of Eren. Unknowingly, Eren has already gotten even with the Dina through the power of the Coordinate, which he was not aware of then. He persuaded other titans to eat the Smiling Titan when the Survey Corps first encountered the Armored and Colossal titans.
Additionally, the original rogue titan will reportedly show itself once again. The titan shifter is believed to be Eren's titan persona. Fans are expecting that there will be more humans that will be transformed into titans on the upcoming episodes since it is all about the origins.
"Attack on Titan" Chapter 87 is expected to be released in the December issue of Bessatu Shonen.
