In Song for Two did Shiwons blindness have something to do with Heechuls accident?
Before Heechul’s story in the For Two series, Shiwon has normal vision. However, Heechul gets into an accident at his other job (not at the restaurant) which affects the corneas of his eyes. In order to save his sight, one of Heechul’s options is cornea replacement surgery. Shiwon, having already loved Heechul at that point, volunteered his own corneas for Heechul. Of course, Heechul is never aware of who the donor is and Shiwon is left with artificial corneas. That’s why physically, a person cannot tell that Shiwon is blind, also, Shiwon is so used to the layout of the restaurant that he doesn’t need that much help maneouvering around.