
the og noi multiplied.
similar to how owen was probably only one entity that got split and the other split versions of him are different in ages with military owen as the oldest (mentioned to looks the oldest physically as well as being in war for 140 years (rather than being the og owen, he probably aged through time differences), og owen and handlerchief/beauty mark owen being more or less the same age, long haired owen being next then black haired twink owen being the youngest.
with og noi, its like this: og toddler noi, the two other smaller toddler noi (the one who originally had the mustache and the other smaller one) then the baby noi.
hope nux and the owens have a kid thats similar to nux i.e. only have one version. its gonna be tiring taking care of them kids if they go past the 10 count

i think that a young past!yeon was the one who linked past!yeon amd past!kihoon and since their red string was forced/not real, it lead to a bad ending. the red string that connects current!yeon to the current!kihoon is probably just the false/forced red string from their past life that got reactivated when current!yeon prayed to the stone (not knowing he had a previous 'deal' with the stone in his past life) and the red string connecting current!yeon to that cutie with short hair is his current life's real red string partner.
the misfortune that current!kihoon experienced throughout his whole life was probably reparations for how past!yeon made a false red string connecting him to past!kihoon which might also be the reason why past!yeon died(got killed?) which left past!kihoon the sole bearer of two people's misfortune which carried onto his next life.
if current!kihoon didnt go to the stone with current!yeon, their red string wouldnt get reactivated and i fully believe that they would've gotten together without it.
seimei is everyone's dead wife thats haunting the narrative