No, Chishiya is not dead. He successfully survived the events depicted in the Borderlands and returned to the real world.
Chishiya's Fate After the Borderlands
Upon the conclusion of the games, Chishiya was presented with a choice: to remain in the Borderlands or to return to his original world. He chose the latter, indicating his desire to leave the perilous environment.
Key details regarding Chishiya's status include:
- Return to Reality: Chishiya woke up in a hospital, signifying his successful re-entry into the real world outside the Borderlands.
- Medical Treatment: He was receiving treatment for a heart attack, which was also the case for Niragi, who woke up next to him. This medical condition was attributed to a meteor blast that occurred in the real world.
- Personal Vow: Following his ordeal and recovery, Chishiya expressed a commitment to live a better and more selfless life going forward. This indicates his survival and a significant shift in his perspective.
His survival and return to a normal life, albeit with a health recovery, confirm that Chishiya is alive at the end of his journey.