Recently, I've rewatched a few of the known tearjerkers anime films, namely: "I want to eat your pancreas", "5 cm per second", "Horatubi no mori e (forest of the fire fly light)", and "Your name".

If you've seen it, you might've noticed that all of these share the same theme of >!lost love!< . Now I won't spoil, but most of these films have what you called a "bad" ending, so to say that is >!The lovers are separated forever or end up with someone else, leaving only a bittersweet memory and having one of the lovers to move on!<. 

All of this film left me sad or emotional or at least give me that post sad movie melancholy.

But with these films and many other works of similar tone that I have read or watched, there's a sense of "closure"; it might not always be a satisfying closure or an amicable closure, but at least there's a closure for one or both lovers. Even if there's not, the story itself can be a closure for us the viewers be it as a message or the absurdity of the story itself serving as entertainment.

It can be a tragedy like a force of nature, an accident, or a misunderstanding, but at least there's closure.

But in the Reze Arc, there is no closure for either lover. Both of them left the stage disappointed. The most absolute example of the trope "Star-crossed Lovers". That is the "Star", a force so strong, so out of this world that it tears the lovers apart. Which, of course, in this context, is Makima, Control itself.

There's also the fact that this is not a Romeo and Juliet type of tragedy, where there's a misunderstanding that led to the death of the lovers and the absence of closure. Here, the **INTENT** is clear, the goal is set, and the path is travelled. Here, the star themselves not only separates them, but they also destroy any sense of closure for the lovers. Reze unable to finally show her true self to Denji and return his feelings. Denji robbed in one of the few times in the story (especially in part 1) where he actually make a choice for himself and by himself.

The fact that the arc in the manga and the film itself is a standalone in the greater CSM story absolutely encapsulates this feeling. Because at least in those other stories, this is the end, it's sad, but at least this is the end.

Here, the story continues on, the feeling remains, and the door remains unopened. 

With that said, Chainsawman Reze's arc hits so hard because it's one of the few romance films where the ending is just a bad ending, no closure, no message, it's just pure unfiltered bitterness.

Why I think the Reze arc hits so hard and left me bitter for so long compared to other drama and romance films.