I've been seeing reviews about this anime lately, but even though I find its plot interesting, I still don't have the will to watch it. Maybe because it's a melancholic one that's, as you've said, quite depressing. I don't really have tolerance for such stuff. Anyway, I will add this to my to-watch list, and I'll see if I can finally muster the will to watch it. Btw, thanks for sharing!