Board Thread:News and Announcements/@comment-24187738-20150528131310/@comment-4132518-20150611035118

I'll go with #6: Sakuya. Since, Love Live!: The Scool Idol Movie is produced by Shochiku, which uses Japan's famous landmark, Mount Fuji as its logo.

BTW: Soleil has been used as a unit name since 2012 in Aikatsu! (whose movie is produced by Toei), another idol series.