bruh

yeaa can somebody explain this

they arent twins they just have the same last name lmao otherwise that would be v incesty. as a kid jasper was actually really lucky and hart was unlucky till that day in the hospital when they made that promise and held hands so harts surgey would go wrll. jasper gave him all his luck resulting in all that and their connection w holding hands. they only remembered it all at the end after the acciden

So they ain't twins YAY

This story is originally in Korea. In Korea, there are names that are very common like Park, Kim, or Jang. Unlike in the west, just because you have the same last name, does not mean you are related(this is also true in Japan). But you could still be related if you have the same last name(but in this case they are not).

i thought jaspers last name was seo or something tho

yeah there was a bit of confusion over last names as jaspers last name as a child and when hes olde is different for some readon im not sure why its not a translation problem like its apart of the plot but im not quite sure why it is or what it means