I'll try to sum up what i think.

I watch the anime first and considerate that despite the rocks that have in its trayectory it was entertaining.

Now that i know all the story i can't comprehed the objective of the autors. It's a very interesting beginning, a Male MC that it isn't the typical good boy, and the female MC that's can have more personality and not be simply violent tsundere because fuck it. Yes, we have our "childhood friend" of the MC with a disease that in spite of being only revelant times to times i can take seriously her character.

What happened then?
I'd like to know, without my knowledge the manga become weider and weaker with each page since the last arc of the anime.

I think that the authors want with madness include a plot twist in the manga for later give us a plot twist even bigger than the first to later lead us to explore the mind of the main characters with only ten chapters for the finale, and probably that wasn't a good idea (and at the same time i wouldn't have faith with more chapters).

I can't help thinking that the authors after decide the main idea of the manga, they only trust in the power of the plot twist until the end. And yeah that wouldn't be a problem itself, but the really issue is in how the authors achieve them.

This manga could have been one of those that i like to remember in the future but at the end i only have a headache while a write this, with the hope of feel better after this.

Now that i think, i can't remember a simple moment when i honestly laugh with the "comedy" of the author.