How are they able to see in the room, while the others can’t?

Shhh don’t question (づ￣ ³￣)づ I was thinking the same but I just figured it was because they(the gang guys) were talking while the others(the main characters) weren’t

They can't, they memorized where the stuff was when the lights flashed on then turned off, the fighting was probably cuz they were close. Let's not overthink things ╮(￣▽￣)╭