Because the readers also have no friendsThanks for the TL!
Just a side note, this bothered me in the first chapter too, but I really really hate when the main male love interest/self insert is stressed as having no friends. It just feels pathetic. Like, it makes sense if he's some lone warrior or has a reason to be alone but guys like this one are never characterized as having loner personalities or being different in some way that warrants it.