Board Thread:News and Announcements/@comment-11148831-20150327141150/@comment-24187738-20150422153756

I... really don't see any resemblance. ^^" Context-wise, it's even more unlikely considering the right image is just a notice looking for more members to join their school idol group in Otonokizaka High School. Sunshine is based in an entirely different prefecture, likely to be somewhere near Sendai based on both the dialect of one of the members, as well as the landscape that's featured in the background of that promotional picture.