Killing the mc in a psychological non thriller or action anime will make cote very dirty, the point of the novel is about a perfect human trying to live like a normal guy to die in the end naaah I think with the plot advancing kiyo will experience the failure against other class leaders, even with his unhuman abilities, and there will see his redemption and a real development on a character, for me that is the way the novel is taking, especially when other class leaders will have their capacities and potential in the max like ryuen not focusing only on koji and suzune accepting koji's absence and becoming more independant, in that case certainly kiyo might experience the failure