as a girlie who has reread this a few times..

context: lee muhan was the "human version" of mugo.

mugo is the name of the curse put upon him so that he can become the personal "god" of the family where uke (jaheon) is from.

explanation: lee muhan and uke have already seen each other, once, when lee muhan emerged, but even then, for jaheon, he doesn't care much about lee muhan bc he doesn't know him — like stated, lee muhan only knows the PAST life of jaheon, not the now, that's why u are seeing uke lash out like this.

basically, uke mad when lee muhan comes out bc lee muhan always says that he loves him but literally knows nothing about uke in this current life.

as for the "i want to run away when i want to see you", it's probably the past life of jaheon emerging.