#moshen

So, the idea is like mid-canon for PIDW, starts at pre-Bingge v. Bingmei extra.

Shen Yuan is reborn as a bird demon prince, his system is like, 'hey, try to make Binghe happy, good luck!' and low-key let's him go wild. Which he does.

When Binghe finally shows up in the demon realm and starts establishing himself as emperor, Shen Yuan is quick to establish himself as an ally by writing numerous letters to him choke full of advice. Binghe is grateful and is a little infatuated with the writer of the letters.

However, Shen Yuan only manages to convince his parents to officially offer a alliance with Binghe after the realms are united and Cang Qiong falls upon Yue Qingyuan's death. Binghe is happy to accept said alliance and asks for Shen Yuan's hand in order to solidify the alliance.

Shen Yuan's parents are low-key overprotective and aren't entirely for it but Shen Yuan is all like, "well, Binghe deserves everything he wants and if he wants me, he should get me (tooootally not into Binghe myself, no sir, you can't prove it)" so his parents allow it.

Unfortunately for Shen Yuan and his kingdom, he looks eerily similar to Shen Qingqiu, to Binghe at least. Liu Mingyan and Ning Yingying don't notice it because of the demon features but Luo Binghe very much does and he is pissed. Trauma/Xin Mo kicks in and convinces Binghe that Shen Yuan is probably a lot like his former master and he can't trust a bunch of letters or an alliance or anything about him.

Shen Yuan doesn't know why Binghe looked so horrified and then furious when they finally met. He is completely unprepared for Luo Binghe to suddenly start treating him like an enemy or prisoner. He's ordered to keep his face hidden at all times while treated worse than a servant, his kingdom destroyed and his family slain for treason. Luo Binghe doesn't even allow Shen Yuan an official wedding.

Some of the wives are sympathetic and Shen Yuan tries to strike up a friendship with them but it just goes. poorly. Luo Binghe sees a man trying to make the best out of a bad situation and gets really pissed (because he hates himself lol) and forbids Shen Yuan from speaking to any of the other wives about anything other than chores or emergencies.

Shen Yuan makes his home inside the library, no one really comes in there and if they do, he can easily keep an eye on them and avoid them. He gets along fine with the workers but there's only so much they can do to help him. He doesn't understand how things went so badly and Bingzu/the System is horrified it's happened at all. They give you a pristine free-will Shen Yuan and abuse him?! They're halfway to revoking the protagonist halo.

Meanwhile, Xiang Fei was reborn as a outer disciple of a little sect, barely noticeable in comparison to some of the other sects. Well, until Binghe either consumes or destroys the other sects. It's very anti-demon, which Xiang Fei is NOT on board for, he doesn't want his son to show up and kill him!

He decides to offer his services to Mobei-Jun, who is lacking a... secretary after OG! Shang Qinghua's death. Mobei-Jun accepts, honestly because he low-key misses the cat and mouse game he and Shang Qinghua use to play. Except. Xiang Fei is actually useful? And helpful? And cares about him, like as a person? and drags his uncle's corpse to him as a birthday gift?

Yeah, Xiang Fei might fall first but Mobei-Jun falls HARD. (no, system/Bingzu is not jealous that moshang is sailing while Binghe is fucking up binggeyuan, shut up)

Unfortunately, Xiang Fei's sect finds out and is like pissed and move to execute him. Mobei-Jun panics and wants to rescue Xiang Fei but Xiang Fei is like no wait. I can work with this.

So, Xiang Fei gets executed but, thanks to an artifact Xiang Fei begs Mobei-Jun to retrieve for him, he's just reborn as a flower/plant demon and can safely run away with Mobei-Jun. (Mobei-Jun slaughters his former sect and presents the severed heads to Xiang Fei while actually managing to confess. He's had years of LBH near him teaching him how to court but he still struggles on certain things. Xiang Fei does accept and they actually have the worst sex imaginable right next to the severed heads. Love wins.)

Now, Mobei-Jun does spend some time in the Underground Palace, as Luo Binghe's general, but not a lot, he doesn't like how crowded it is in there and how warm it is all the time. Thus, he kinda misses the whole Shen Yuan drama, except for going, 'oh, we have a new librarian who actually likes books and doesn't just eat them? How useful.'

But then he ends up going there more and more often, Shen Yuan helping him with one thing or another because God bless Xiang Fei, he just doesn't remember his own damn book. Over time, Mobei-Jun finds himself... not quite in love with Shen Yuan, yet, but definitely developing some feelings.

He panics and tells Xiang Fei and Xiang Fei hears about this male-wife of Luo Binghe's, who somehow knows everything yet can't give an easily accessible source and goes, wait a minute.

So Xiang Fei and Shen Yuan meet and have a Spider-Man point moment after figuring out they're both transmigrators. Both Xiang Fei and Mobei-Jun start spending a lot of time in the Underground Palace and Luo Binghe side eyes them at first before going, eh, they're gay, they won't steal what's mine. (Somewhat forgot he married a man.)

Shen Yuan, on the other hand, is struggling because he still loves Luo Binghe and he still has the mission to make Binghe happy. (The only reason Xiang Fei's system isn't trying to stop mocumplane from happening is they're trying to use jealousy as a motivator to realize how precious Shen Yuan is.)

Sure, Luo Binghe hates him and threatens him and killed his family and kingdom and only touches him in order to keep his wings trimmed too short to fly with and only remembers he exists when he wants to torment Shen Yuan... but that's just because he's lonely and unhappy! Shen Yuan can fix him!

Yes, he's starting to fall for stoic but sincere and romantic Mobei-Jun and genius but silly Xiang Fei but... well, he can't just give up on Binghe.

Then, one of the wives poisons herself and a few others in order to start an orgy and slip Shen Yuan some too, just as a prank.

Shen Yuan doesn't realize he's been drugged until it starts getting reaaally bad and Mobei-Jun scoops him up and rushes him to Luo Binghe. Luo Binghe is getting ready for his sevensome and is like, eh, I'll treat him later. However, that could end up killing Shen Yuan so Mobei-Jun decides to do something risky. Could someone else dual cultivate with Shen Yuan in that case?

Luo Binghe is like. sure. I don't care. And goes to fuck the seven women who he's using and are using him.

Shen Yuan is heartbroken, he wasn't going to force Luo Binghe to cure him, he deserves better than that, but to be so apathetic...? Ouch. Mobei-Jun, on the other hand, is kind of pleased. He rushes Shen Yuan back to his and Xiang Fei's chambers.

Mobei-Jun and Xiang Fei cure Shen Yuan, assuring him he is valuable and loved and if Binghe can't see that, well, they'll show him, in their own fucked up little way. Shen Yuan finally agrees to leave with them.

The system is pisssssed at Binghe and revoke the protagonist halo as soon as he's finished curing those women. Luo Binghe goes to bed, unaware how fucked up things are about to become for him.

Mobei-Jun challenges Luo Binghe for his wife's hand (he doesn't tell Binghe which one) and Luo Binghe accepts because he's an asshole and bored. Mobei-Jun whips the floor with him. Turns out! When one person is getting funneled a bunch of magic buffing ingredients and training constantly! and the other guy doesn't have the power of God and anime on his side with an overwhelming ego! it's easy to kick his ass!

Mobei-Jun and Xiang Fei take Shen Yuan and go and Binghe is just like, oh, okay, well, that's fine, even if it was humiliating. It's fine.

And then Bingge vs Bingmei extra happens. Binghe gets back and starts his search for someone like SY!Shen Qingqiu but it was already going to be an impossible search with the protagonist halo, it's more than impossible without it.