i got to be totally honest with you anon like 90% of the ships i like come directly from my brain going hey i think they would have a fun dynamic. but anyway that’s beside the point. to some degree they kind of understand each other; faust and yi sang are generally on a similar intellectual level, just in different ways. they both respect each other as well, and out of everyone i feel like yi sang early on pre-limbus could have gotten attached to her as the person who had saved him after he’d escaped gubo. over time it of course becomes less than dependence out of fear and much more a sense of understanding. yi sang gets People very well and recognizes parts of himself in faust and it ultimately (coupled with his thoughts at the end of c6) makes him genuinely want to be by her side when/if she needs it like when she got him off the street. you know? and that interaction in c4 about yi sang being talented and faust being a genius— they recognize parts of themselves in eachother just as they recognize the parts they each don’t have in the same way. faust is logical and direct (especially in a way that could have benefitted gubo) where yi sang is more emotional and connected to others, and yi sang is more open where faust suffers from such extreme suppression and the additional fear(?) of being watched. it’s things that they recognize and don’t know if they want to have or not.