But here's the thing, he's a side character, there is no plot armor for him.

For those who don't know: Biyu is a direct lingual of the Chinese word 比喻, which means METAPHOR, as the translator has written note. It has two meanings:
1. A figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable.
2. A representative or symbol of something else.

Its a great foreshadow that Biyu will be a symbol of things to come but have no direct nor derelict influence to it.

That's the thing. None of the people from murim came or were raised from ordinary means, so its unusually profound when they realize its actually something so simple an ordinary person can comprehend and was part of their daily lives. Take the doctor for example, he's responsible for every patient who comes to his door, but he can't do much beyond that very door; While for martial artists, they trained to fight and live to NOT wind up being in a clinic in the end. The moment they entered his door is akin to accepting their own fatality and weakness, which not many are willing to do so.

Spare me, its hard to give him attention when there are buddies with greater development than him.

There is a saying in Buddism and in countless cultivation / murim related stories: You cannot reach nirvana (in Chinese there are various translations to this word, in this case would be the peak and pinnacle of something) if you cannot let go of your inner demons.

Remember, it was the insight of this doctor that MC took a great liking to. He even once thought what a fruitful life would the Poison Demon give others have he not gone through the tragedies he would have - and this chapter is the greatest proof there is.

The pervert of perverts, the hopelessly lustful idiot - SHIT DOG IS HERE!!!

Indeed, that's why the MC liked the doctor, even before his regression.

Indeed, and now the doctor heals others instead of killing them, giving insights instead of keeping them.

Indeed. But I don't think they'll get hostile treatment. Remember, MC recognizes divinity.

You're just obsessive of little T-Bone. But yeah, we need T-Bone to shine.

I don't think there's an evil copy of him. Remember the nature of the gates, especially when this gate is an ARTIFICIAL one.

Given what Bismarck said, not really. By then he already has an ageless appearance (king of his kingdom and a grail knight).

Which also means... this was a PAST gate where the MC started his solitude of demon eradication. A world where he is the ONLY ONE LEFT. Everyone else beside him who entered the gate is in deep, deep trouble indeed.

Red Lady: Merry Christmas, master~ I heard you like your presents in RED~

Me: Oh boy.

But not broken (by her spineless childhood friend and this L counsellor teacher), which is even better.

Just me, it was an example to say not all of us are innocent to begin with. That's why the system rids innocent people - nobody is perfect. If there is truly an innocent person, then everyone could be. If there are no innocent people, then no one is.

Nobody was innocent to begin with. Remember that we at least killed a single life as part of in our everyday lives as in EATING - even if you don't eat meat, you still ate plants, which are still living beings as well. The only difference between us and them (the serfs) is that we are grateful for the lives we took, but they took lives in pleasure.

I didn't say that's not important, its only secondary of importance compared to their adaptability. Remember that not everyone that made it this far are intellectual people,

Yeah, I don't mind the loose ends, but this chapter is literally a fast forward for so many juicy and dramatic potential.