SV Fic Where Luo Bingge Discovers That Shen Jiu Had A Long-lost Half-brother Or Something, And Subsequently

SV fic where Luo Bingge discovers that Shen Jiu had a long-lost half-brother or something, and subsequently decides that he's going to infiltrate the minor sect which this "Shen Yuan" belongs to in order to get close to him and then indulge in revenge fantasy 2.0 when it inevitably turns out that Shen Yuan is like Shen Jiu (i.e. a horrible abusive scum teacher).

So Bingge uses some magical object or technique or other, makes himself look like a scrawny 12-14 year old, then puts himself in Shen Yuan's path in hopes of convincing the man to take him on as a disciple. The idea being that after Shen Yuan abuses him, Bingge will be justified in reenacting his Shen Qingqiu Revenge Arc again and maybe finally feeling some closure about the whole thing.

Yes, this is a very deranged plan. No, no one is going to tell the emperor of the three realms that. Bingge also wants it to be clear that this has nothing whatsoever to do with his recent escapade in an alternate universe, except that he was inspired to find Shen Jiu's relative as a consequence of that. But he's absolutely sure that this guy is going to turn out just as rotten as his brother, given the opportunity. That is definitely the only reason he is doing this!

Flash forward about four years. Bingge's retainers are begging on their knees for him to actually come back and do some administrative work. The harem is running itself at this point and they're all very terrified of the situation with Liu Mingyan and Sha Hualing (i.e. ruling with lesbian iron fists) and whatever the heck Ning Yingying is up to (no one is certain but it's something). The outer provinces are rebelling. Mobei Jun's somehow found another weird human surnamed Shang to cavort with, except this one is basically running admin for the entire northern kingdom now and no one's even sure if they're fucking or if it's some kind of mind control situation or what.

Bingge is annoyed. He doesn't have a good explanation for why a bunch of demon lords would be showing up on the doorstep of Tiny Cultivation Sect to beg him for anything. They're going to spoil his cover! And they're interrupting his schedule! It's already four o'clock and he hasn't started on Shizun's dinner yet! Shoo! Get lost!

Anyway, eventually some of his demon followers get desperate and dramatically kidnap him. Shen Yuan is horrified and grieved when it seems that his precious disciple, so like white lotus Luo Binghe from the novel, has been captured by demons. He tries to track the assailants down, but they've covered their tracks too well. In the end, there's only one path left to him to pursue: taking this matter to the protagonist!

Yes, the protagonist! Because the thing is, Shen Yuan noticed the similarities between his disciple and the book character he so admired. Not only that, but he did manage to glimpse Bingge one time from afar. It wasn't anywhere near to a real interaction, but it was enough for him to notice the strong resemblance between the protagonist and the mistreated little lamb who showed up at his doorstep. A resemblance for which there can only be one explanation:

Shen Yuan's disciple is one of Binghe's kids!

Yes, he had it figured out since fairly early on. Not only was there a resemblance, and not only were their dispositions quite similar, but also the boy showed a lot of signs of some demonic heritage. Shen Yuan was just working up to broaching the subject, partly because he had been trying to avoid any direct or even indirect interactions with the emperor, and partly because he... became somewhat reluctant to part ways with his student. Sue him! He got attached! And anyway, he knew how missing child plots usually went. There was probably someone in the harem who was out for his disciple's blood, and it wouldn't be safe to send him back into that mess until he was strong enough to look after himself.

But as is inevitable, the plot seems to have reclaimed Shen Yuan's student all on its own.

He just... needs to make sure that it isn't a tragic outcome. It seems it falls on him to make the emperor aware of his son's survival, and subsequent peril, and help launch a rescue!

Which also means approaching Luo Binghe in person, which he knows is very risky indeed, due to his connection to the infamous Shen Qingqiu! He'd been avoiding the protagonist at all costs for that exact reason.

But if it's his only hope of rescuing his disciple, he will simply have to take the risk, and hope that enough time has passed that Luo Binghe doesn't read too much into a shared surname and a passing resemblance. Or that restoring the emperor's long-lost son to him will be worth seem lenience for the crime of being connected to Shen Qingqiu. Maybe if he's lucky, he will even be allowed to continue visiting his disciple! (Ha, yeah right! More likely, Luo Binghe's going to take his head for hiding his own kid from him for so long!)

Anyway, cue Luo Bingge running around swapping between his Emperor and Disciple forms, dramatically trying to orchestrate a situation where he can fake the emperor's death and go back to the sect with Shizun as his disciple, or something, only for it all to blow up in his face because Shen Yuan keeps flinging himself between Bingge and potentially fatal threats that could plausibly kill him???