the first image has nothing to do with the Ultimate swap au lol. I have so many more thoughts about these two, but my hand hurts. I think you understand the basic point tho. Gundham is nice(er) to Yuka because of their childhood friendship, She has more credit.
Gundham thinks every human ever is out to get him. Yuka is not out to get him... Therefore she's not mortal... THEREFORE fate has brought them together! So now he can live a slice of life romance anime with her. The fates have declared it! They told him...
