im surprised the comments bellow me are lukewarm/negative
perhaps im biased because i can see myself (too much) in Shizuku and, later, Kaori. so it made me cry. the message(s) the manga wants to convey are very great, however it may have caused the writing to be more Telling than Showing at times. but since ive experienced the things that happened in the story, its like... man, that hits hard.
i disagree to this just being a tearjerker terminally ill lover thing. or that its just a sad ending for the sake of being sad.
from the start of the story, its focus are very clear.
ending one's life, death, guilt, farewells, and dealing with them.
its not out of nowhere, you know. its always been there throughout chapter one to chapter end. and, if its just dark for the sake of being dark, it would not have hit as much as it did to who the story's directed to--the people who struggles same way as the characters there.
the story makes the audience wallow in their feelings, before showing "hope". to have a conclusion, or at least to get better from those struggles. though again, the focus on getting the message across maybe made it feel as if the author is straight up just telling us instead of making the readers find out themselves (hence the "lines of text" comment below me, i agree)
if you cannot relate to the message since the start, it wont hit the same impact as people who does did. its like a iykyk thing.
so subjectively, I really enjoyed reading this, I got something out of it. but objectively i can see some technical issues and understand if people dont like it. its either a really good hit or a really bad miss for you, depending on the person.