When ML (fox spirit) was going through heavenly tribulation, it was so difficult he almost lost his life until he saw MC and took him as a "shield" (heavenly tribulation doesn't hit humans I think) and because MC saved ML's life, their karma got entangled, ML and MC's fate got entangled. MC thought that ML was a girl and so always thought that he's his "wife".

Moving forward, MC was sent by his master to another cultivator because something bad was brewing in their sect. MC wanted to go home so he snuck away and went back but then, their sect was in chaos. It seems like the emperor at that time wanted to borrow luck/prosperity from the heavens and their sect assisted in that (borrowing from the heavens is taboo because it is "borrowing" you'll have to return it someday).

So MC went searching for ML because he was worried and he found that the ML was prostrated into the wall (?) by other fox spirits including his mother! (seems like they think ML is a curse and must be killed). MC saved ML (There were some touching scenes here of MC not leaving ML and saying he wasn't a curse, ML asking if MC isn't mad that he's actually a boy and MC isn't at all - he just thinks if ML can't be my bride then he'll be my sworn brother. In summary, ML just thought MC is all he has left) bu then when they were escaping a tunnel, ML got "killed" by a black mist and MC couldn't save him because he also fainted.

Then, MC snuck back into their sect searching for his master so he can save ML but then he saw one of his senior brothers being killed by his fellow sect members (some more scenes here showing how smart MC is, sneaking around at 10 years old with little cultivation against those with advanced cultivation). He also found that his master died and in the end, he was caught but he pretended that he didn't know anything so he still lived in the sect but was also trapped their.

So five years passed and MC grew up into this seemingly s*upid and slow teenager (he was really slow in speaking, walking etc but he was no where near dumb) so some things happened and MC got the chance to escape and he did.

Maybe 8 years passed and he's 23 now, he's joined the rebels and stuff (I think MC's long term plan is to rearrange back the stars/fate which was altered when the emperor borrowed prosperity from the heavens, his master didn't want the emperor to do so and he was killed btw).

So fast forward to a few chaps, MC met the ML again, he thought ML died but ML was actually taken to the Hall of Demons (ML is half fox, half demon). ML escaped and he also committed patricide because ML's father wanted to kill him and take his powers for himself.

So ML has always been vocal about him wanting to be with MC, taking MC away etc. Simply, he's obsessed with MC. Take note that even though maybe 10 yrs has passed, ML is a demon so that time just seems like a day to him and so he's very caught up with the past and MC is all he have left. He's very obsessed with MC to the point that if he can't have him, might as well just kill him etc. I can't explain much but reading the story made me really understand ML's emotion and sympathize with him. Also, when MC (who's heteros*xual and for him, a human, a long time has already passed since he met ML, although he feels like they are closed brothers, he can't see him romantically) rejects ML, I can also understand him especially since MC is focused on his revenge and he hasn't thought about love at all.

So another 1 1/2 year passed, ML stayed with MC and a lot of things happened in their rebel group, they succeeded in claiming a city or something etc. So MC found out that the reason ML could leave the Hall of Demons was because somebody opened the path for him, and this somebody turned out to be the emperor's adviser (Yan Zhen).

Yan Zhen's subordinate wants ML to return and MC heard that conversation, he didn't want ML to go so he would always bring ML along in his political discussions so ML would see why MC and his group are rebels and this might make ML stay.

(MC's greatest secret, I think, is what happened to their sect and his revenge plan. He's never told this to anyone, even ML)

So things happened and the subordinate was talking sh*t to ML saying stuff like he can never have MC, MC never wants to be with him, MC never feels anything even the slightest bit for him, MC might even use him to get his revenge etc and the ML seemed to have been hypnotized that he almost killed MC (what saved MC was just an artifact given by ML which contains ML's fox blood and could repel him, he gave this to MC the very first time he had the urge to kill MC, you see, ML's not that mentally stable but we can imagine by reading the story that he's really been through a lot and he's only light is MC but then MC isn't the MC of the past anymore).

After the ML was repelled, and his mind cleared up, he tried going to MC and saying he didn't mean to do this but this was the drawing line for MC. MC thought that no matter how much he tried to influence and change ML, he can't. He can't quench the ML's blood thirst. Right at that moment, one of MC's sworn brother goes to their yard with some cultivators, and they saw what happened, they fought with ML though ML didn't fight back.

At the end, MC activated a blood array using ML's artifact to trap ML. This array couldn't have been drawn in just a few moments, had to be prepared for a while so ML realize that MC has always been wary of him. ML is saved when Yan Zhen's subordinate shows up and admits that he is from the emperor's faction.

MC returns the artifact to ML and ML says he regrets keeping his fox blood for someone who doesn't appreciate it (he stabs a knife to his heart, taking his fox blood away which dropped to the ground and became a white flower).

So another 5 years passed, maybe MC's 29 now, and the wheel of his revenge plan is really turning. Now, ML feels like he really hates MC but then also loves him at the same time, he seems even more obsessed now with MC and this obsession is also somehow his weakness.

Can't remember much afterwards cause I kinda skipped the war sentences but it was mostly MC going with his revenge and ML trying to ruin MC's plan.

There was even this time when ML shoot an arrow at MC (the bow and arrow was actually from MC as well when they still had a good relationship) and MC barely lived! What was sad was when MC was in his death bed, his sister asked what happened with MC and ML and MC was just like "you know, if he just gave me time, I know I would have gave in to what he wanted"

meaning if ML just didn't force him like that, mostly likely MC would have fallen in love and agreed to be with him in the future.

Afterwards, time went on and things happened, ML and MC got trapped in the upper underworld or something and their relationship was kinda getting fixed (ps he also found out that ML soul is incomplete) but then when the portal opened and MC was planning to scout it out and get out of that place, ML went mad thinking MC's gonna leave again and ML ended up raping MC.

MC wasn't actually mad at ML after what happened, or he just can't get mad because ML looks to really really regret it but then when the portal opened again, MC trapped ML and escaped from that place.

So moving forward, MC returned and his pet (he has a rabbit pet from he was young) was getting weaker, it didn't want to eat and so on. It eventually died but then!! It turns out that half of ML's soul is actually in the rabbit and ML seems to be guarding MC that way (ML wasn't always the rabbit but when he took away his fox blood/soul away from himself, that part of his soul attached to the rabbit because that soul really wanted to be with MC). If my interpretation is correct, it seems like ML went mad at times or wasn't really mentally stable was because his soul is incomplete.

Afterwards, the MC realized that he actually misses and loves ML and he subtly went looking for ML cause ML kinda went missing because there was trouble with fusing his soul with the rabbit's or something but eventually ML found MC and they made up saying sorry etc (though it was touching but I was kinda disappointed at this part cause it was too short!)

Afterwards more on war plot, MC's schemes etc. MC also drinking a "potion" that would intertwine his and ML's fate even after so many reincarnation etc and ML crying after being so touched etc.

Then finale, MC sacrificed his self for the finale of his scheme. But! He's still alive but he was reborn as a tree I think but everybody except MC and a sect leader I think thought he died. Afterwards, he and ML lived away from the human life etc and the end.