Ray remains alive throughout the manga. The author chose to keep him as an important character and continue his journey without ending it with his death.
Ray remains alive in The Promised Neverland manga. The author chose to keep him as a significant character and didn't write his death into the story.
It depends on which specific comic series or storyline you're referring to. In some, Shrinking Ray survives, but in others, he tragically dies.
Shrinking Ray's demise in the comics is a result of a series of unfortunate circumstances. There's a combination of a trap set by the antagonists and a moment of heroism gone wrong for him.
I'm not sure. You might have to read the manga yourself to find out for sure.
No, Levi doesn't die in the manga. His fate is different from what some might expect.
Kaeya doesn't die. The manga continues with him as an active and present character. His storyline progresses without such a fatal event.
No, Inosuke doesn't die in the manga. The story keeps him alive throughout.
No, she doesn't. The story doesn't have her dying.
Nami doesn't die. The manga keeps her as a significant and surviving character with ongoing plot developments and adventures.
Sure, Dio meets his end in the manga. His demise is a significant plot point and has a major impact on the story's development.