Wait does the sister have the eternal sleep disease too? ╥﹏╥

I think so as he asked beru what his sister doing and beru replied nothing much but sleep... ╥﹏╥

Nope, unless they diverted from the novel. But she doesn't have it in the novel. Just strong trauma, which will bad when you think she has to bear seeing her brother hunts monsters that traumatise her.

Not that Jinwoo helps cuz he is very secretive about his power and she doesn't know that he is overpowered as fuck.