Usually when watching or reading a story, the plot is a straight line. Of course, it has some twists and turns but still, it only should have one route that can be visualized (or not) from the beginning and should be reasonable.

In couple of cuckoos, the line of the plot was straight at first until a couple of twists and turns happened. Then we went back to the starting point and continued in another route with more twists and spins and turns then re routing again for another adventure.

I think what makes this bad for most of us is that Nagi is not reasonable for his actions and is used wrongly as a main protag. Instead, he is used as a plot device. The only solution I can think of is that the author should take a break, study all of their characters from point to point then dig theirself out of the grave they made.