That good anime which had a bad ending and you are still pissed about it

Just list anime and share how you feel about good anime which just couldn't have an atleast average ending....BUT DECIDED TO BLOW THE VIEWERS MIND BY RUINING THE WHOLE ANIME AND ITS PLOT RIGHT AT THE END....UGHHHH!!!

In my opinion, Aldnoah Darling Franxx

Ouran Highschool Host Club. The anime, not the manga. The ending just felt... Rushed-- no relationships tied up, bunches of unknowns.

It is the surprise attack everyone receives after clicking on this forum...only the strong who survived will proceed and read the actual details they want...hehe

Durarara X2 will forever bother me with its choice of ending! Shinra shows his true colors as a complete scum bag for taking away Celty's freedom of choice by literally and metaphorically removing her head. I don't care how the show spins it Celty whole wanted to leave the relationship and Shinra just says no with his mcguffin mind control katana. Worse yet they have one of my favorite characters Shizuo be an unwitting accomplice in this crime of moral railroading! This then furthered by the other characters in the plot having illogical jumps in conclusion in what I can only describe as a bloated plot with too many characters not knowing how to interact with each other tripping over the plot's need for an epic shounen climax. The only character to come out of that whole series intact was Izaya.

Soul Eaters anime specifically had a dumb ending. Haven't read the manga so I cant compare the endings between the two. I'm only mad cause that show should get some kind of remake