I read this manga to this chapter in one go; to this point, all the deaths seems quite unearned. It's like, we spend lots of time for the characters to grow in us just to see them all die for what we call an epic ending. I know it's an all out war, people tends to die, but the ways all of them survived all the shit they've been through (sometimes in an illogical way) just to die as Red's stepping stone is quite unfair.