After the surprising revelation of Zeke's origins and parentage in the previous chapter, "Attack on Titan" chapter 87 will continue the backstory of Dr. Grisha Yeager.
The popular theory about Zeke and Eren's relationship was finally confirmed in the previously published chapter. They share the same father, Grisha, whose traumatic experience as a child was also explored. The next chapter will be out today, but many spoilers have already made the rounds including the title, "Borderline," for weeks now.
"Borderline" is believed to explore the backstory of the Mare race when they were strictly forbidden from going into Paridis Island. Elodian traitors are being killed in one part of the island by injecting the titan serum on their napes before they are thrown over the wall. It is believed to be the reason why many of the titans that have attacked come from south of the Wall.
It is also believed that the Smiling Titan who devoured Erin's mother, Carla, will be revealed to be Dina Fritz. Dina is the first wife of Dr. Yeager and the mother of Zeke. It remains to be seen if Zeke will find out that it was actually Erin who caused the death of the Smiling Titan when he tapped the power of the Coordinate and ordered other titans to feed on her.
According to spoilers, the chapter will further explore the torture and hardships Dr. Yeager has gone through and could eventually lead to the exploration of Eren's extraordinary titan abilities. The Original Titan Rogue will also appear and he will be a soldier who is a titan shifter. As fans of the manga series know, it is Eren who now owns the ability of the Titan Rogue.
How has Eren adapted the same abilities? Is the end of the manga series in sight? Find out when "Attack on Titan" chapter 87 titled "Borderline" is released on Nov. 9.