People who think this manga is "bad" are unfortunately used to series considered "normal" or "lightly normal" unfortunately, we see in the field of psychiatry, especially in psychiatric hospitals, cases like those of "Shio and Sato", of course, less dramatic, but no less similar. I simply loved this manga, the story and everything about it. I don't consider the ending to be bad at all, sad, depressing, but not bad. I've seen cases like this in psychiatry, and the "Shio"'s and "Sato"'s around the world are much more than we imagine. The human mind goes beyond understanding itself. Tourette's syndrome, Stockholm syndrome, schizophrenia, anxiety, ADHD, bipolar disorder, anxious depressive disorder... So many things corroborate the story of a manga like this to be truly real. In the psychiatric hospital I have seen so many cases, many worse and unimaginable that go beyond the story of this manga. Knowing more about the subject, I don't blame Shio at all for acting like this, nor Sato for doing all of this. Wrong? Yes, completely, sickly. But for these two? What's so wrong with being together forever? Shio would certainly need severe help at this point in life, everything she does is a fantasy that her own mind created to hide the fact that Sato is gone. Will she be a "new" Sato? Most likely yes, as this type of disorder generates a vicious cycle. But since we're not in a real story, but in a manga, let's let Shio be happy in her own way, and let's wait for Sato's reincarnation :)