I understand that some people hate the ending because it was rushed (and because none of the main cast died), but I feel like you guys should just take the ending and become satisfied. The latest chapters were heart wrenching, so ending it with a happy ending is a great way to make the viewers happy and satisfied, and so that their fear is lifted. I do think that it was kind of a "too good to be true" moment, or a "deus ex machina" moment of some sort, but I think we all deserve a break from the psychological trauma that the manga provided, so I think the ending is pretty great!