I'm not sure specifically as I haven't read this exact novel. But generally, it might be about unrequited love, where the protagonist has to deal with the situation of the other person not loving them back.
Since I have no information about this novel specifically, it's likely that there is a protagonist who experiences this unrequited love. There might also be friends or family members of the protagonist who play important roles in either supporting or challenging their feelings. There could be a rival in love as well, if the story takes that turn. Without reading the novel, it's all speculation, though.
The plot of 'Don't Say You Love Me' manga is centered around the lives of a group of individuals who struggle with expressing and understanding love. There are misunderstandings, unexpected twists, and moments of self-discovery.
Well, it could be that the manga has deep character development or explores themes in a thought-provoking way that makes blaming it unjustified. Maybe the issues people might have with it are more about personal preferences than actual flaws in the work itself.
Well, it's not a straightforward yes or no. Some manga have strict rules, while others are more flexible. It all comes down to the imagination and creativity of the author.