Jinjae make me insane
SHJ is Crescent Moon's handsome Ken doll, YJ is similarly the beloved playing doll that you pamper and keep in its glass case. They're both the object of many awakener's obsession, some where they keep that person separate (Shishio, BHY, KSH for YJ) or other cases where they continue to take care of them and keep them close.
They're the sacrifice prettied up at the altar, they're the transcendants fighting figurine doll, where those powerful godly beings keep interfering in their lives and "care about/love" them/show them affection and make a mess of their lives in their quest to benevolently help worlds they're not involved in, their death/the undoing of their self and chance at getting a happy ending is a necessary sacrifice for the greater good and the preferable outcome. They're also sought out by other transcendants for similarly dehumanizing reasons.
They both have been the target of a wedding ceremony attempting them to strip them of their self and deeming their personhood irrelevant
They're both simultaneously overwhelmingly powerful and competent and extremely helpless, aware of how bleak their fate is and how their chance of getting their happy ending is next to nonexistent. They're often more valued as an object regardless of their will/individuality which is often deemed inconvenient by many parties.
They're both doomed by the narrative
They're both extremely observant, good at reading people, goot at taking care of people, pretty benevolent in their own way and simultaneously extremely ruthless, they're good at manipulating people and are pretty private and bad at emotional vulnerability/asking for help, in part because their parents fully neglected them outside of basic necessities and because they don't have faith in society in general.
They are frequently put on a pedestal and often people who've they paid attention to define their self worth through the attention they (YJ or SHJ) give them.
They're both wholly unused to being seen due to being either seen through rose colored glasses or sewer colored glasses and it's a system they don't think they mind that much, and they're used to either be twisted into a more palatable light or being despised for not being more palatable/personally useful to them. And they frequently use a palatable/acceptable persona in order to get somewhere with new acquaintances and often play with other people's perception of themselves, either for funsies or for getting what they want, both because it's a more efficient way to interact with other people and also because their actual emotions/selves get rejected or dismissed as a lie. This is why their initial interactions are soo awkward, and why once it hit a certain point they start exponentially getting along better
Then they start interacting and they're more similar/in sync/same wavelength that they expected, even if they're held back from realizing how similar they both are by their preconceptions about the other
They do have their beloved/people who do know them and see them more than others ever do(STW, YH), but the entirely new variable in Jinjae is that the other fucker is the same
they relate to each other too much in a way they can't relate to STW/YH
So we've all read the same novel. Jinjae have this thing where they're seen and not judged for it (aside from the occasional throw away comment where YJ make fun of SHJ for something silly like not eating bread crusts, but they're hardly an actual judgement/condemnation YJ is making on SHJ), they're being actually cared for by someone they actually find reliable and trustworthy and they're in the presence of someone who get it and who understand them