[quote=@Sakaki Chizuru]
[@heroic2019][@KoL] 

Hmmm, Charlie isn't exactly the type to have super duper close friends, she is a bit of a shut in in that sense. However, I could totally see her joining a club or something they're all a part of. 

[s]The idol club of course.[/s]
[/quote]

Oh, they don't need to be that close. Or even be friends for that matter. Like I said, at least having them as acquaintances would make sense since they pretty brush shoulders everyday, but other than that the extent of their relationship could be as vague or as detailed as needed.