I don't know if there is a novel but to my understanding, this is what happened so far.
They are currently in another world/dimension. Something happened to their first world, Seme sent his Uke to this world but it has consequences (amnesia of uke). Seme followed by almost killing himself and using like an adrenaline rush to power up and follow Uke.
So far the 1st world seems like it's already been destroyed. There are only a few Guides left that's why they are all sharing Uke's Guide power. There are two ways to guide one is just physical touch and the other is seggs. The Seme and Uke had a bond but it's now broken.
I think the problem happened because Uke is not supposed to be bonded by only 1 esper. Remember the guides being killed on the 1st chapter because there are just too many espers.
Yeah, that's what I understand so far.
YES, THIS DOES NOT HAVE A HAPPY ENDING
but if you still want to read the story, welcome to paing and suffering.
I read someone summarizing the whole novel n I think there might have been a happy ending where the mc kinda left them broke all contact and started a new life somewhere else. Only one who knew was uh the guy who doesn’t like guides, but i think the blonde dude does end up finding out and following him and I think they end up together. Honestly I might be wrong, it’s been a while since I read it.
From the very past or first ever encounter that they met they are Xiao Jifeng (demon or dragon) and Xuan Yue (royal dragon) many things happen and then we see Ryan/Jifeng do horrible stuff to Aoao/Yue ... Yue/Aoao dies and then possibly reincarnate/rebirth but due to the circumstance that he died he is now weak. Well since he is a royal dragon so that might happen. Which brings me why the Dragon Clan might baby Yue/Aoao.
Now I think Aoao/Yue's older brother or even the dragon clan killed Ryan/Jifeng due to him killing Yue. They met again now as Aoao (now weak) and Ryan as the black dragon of the mountain thats why they have no memory of being Jifeng and Yue or the older brother did something to make them forget.
Modern era is now where the story takes place. Now older brother is angry since someone knew the past that he tried to hide to his little brother even it might not be 100% correct and I think it was the snake. Older brother you really need some explaining to do!
I am now sure that Ian and Brian are two different personalities. Ian may be the reincarnation of Brian but that was his past life, Ian is his own person.
We have yet to meet the other dragon (i forgot his name) and know why he is obsessed with Brian. I really thought that both of them would meet Brian at the same time but I guess that is not what happened. So, the conflict of the brothers started with Brian's death.
Isn't the other dragon Cardinal Brixton, considering the silhouette around the start of season 2
It is, but OP's point is that we haven't seen Cardinal Brixton interacting with Brian during the flashback yet.