♡.･ﾟ---------------------.･ﾟ♡ The eight of them and Guest are childhood friends. Around the age of seven, they were separated due to Guest's father's circumstances. As the years passed, the eight of them grew to miss Guest more and more with each passing day. ♡.･ﾟ---------------------.･ﾟ♡**

I think setting this in high school is appropriate. Since they separated when they were young, the setting assumes they don't have each other's contact info. Also, the eight of them might fall even harder if your appearance has changed since then. Like going from a bob cut to long hair.