he carries the burden of having named god's favorite human and therefore prevented donbgaek's soul to go to heaven and therefore to god.So ever since that moment everyone is blaming the seme for that. God is furious and gave him this impossible task of loving dongbaek in his stead ( by linking both their souls (seme and dongbaek) so once one dies the other has to die and they are in this endless cycle which can only be broken if they both love each other and live together until the end). But since he named him everyone else gave dongbaek a hard time and only bad things happened to him so of course the seme thinks it's all his fault even though the only thing he maybe did wrong was act before thinking it through
Knowing that the seme would eventually take full responsibility for everything, even if all he did wrong was act impulsively and without thinking things through, is unpleasant, but having to go through the anguish of losing his beloved all over again is absolute sorrow and anguish.
i dont get it, why is it his fault when dennis’s father (i guess?) forces him to chase after dongbaek all this lifetime?