I'm confused too with this event but i think i get the idea a little .. If you check the "Friends List then Manage Friends at the bottom", you will see the names of your friends who didn't online for 14days above has this Konoha Leaf emblem beside it .. Same with your Group Members who hasn't logged in for 14days and above .. I think this "Everlasting" event is somewhat like the Call for Duty event whereas you need to recruit back your mates to play the game again ..