O'Niel and Ed who gripped each other and even hit each other didn't care about the injuries they suffered from the broken glass. Ed, who was still young, was trying to defend himself as well as evidence that could put O'Niel in prison. Because it turned out that the person Abriella had been looking for all along was O'Niel, the person who had been secretly planning David's assassination was O'Niel. And Ed didn't even know that, he only realized it when he met David in the elevator earlier.
Ed is currently defending himself from O'Niel's attack trying not to get stabbed by the knife O'Niel was carrying that he had seen earlier. Ed was not afraid when he faced O'Niel earlier, but when he saw O'Niel carrying a sharp weapon, Ed acted to be more careful. Because for someone who has already been killed, it will not be difficult for him to kill other people to eliminate evidence.