First of all all tragedy genre got plot like these to make things more spiced so if you aren't used to seinen tragedy of course you won't love it , and honestly so far i enjoying it. It is depressing anime and story is really great. Stop complaining about every single shit tragedy plot its not your typical steins;gate or Haibane Renmei, authors won't keep making story plot to what you actually like. This anime is great, the animation is good, Good character build up. The thrill and mystery is art in this and we see less animes like these. The main character's personality suitesfine too. 7/10 for me because of the animation was done in a budget we all can see as a manga reader but yeah its great and worth watching loving it so far.