I have been working towards reaching the required 10 characters at 7 star and 17,500 GP. Finally reached this after months only for it so still say 9/10 characters. The only 2 I haven't got up to requirements are juhani and canderos. Nowhere on the event on the game does it suggest you need either one of these 2 so I have spent resources and time gearing up a character I didn't need to!! Why does it not say anywhere on the journey guide who exactly you need!