Anna Oonishi | From Japanese Junior Idol Upd

Like many junior performers of the era, Oonishi's early visibility relied heavily on solo image DVDs. These releases prioritized simple, themed photoshoots:

She participated in compilation media, including the School Mizugi Audition series (specifically Part 13 in 2006), a highly prevalent genre in mid-2000s gravure that focused on standard school swimwear.

Neither of these has been verified.