According to
https://www.wikiwand.com/en/Together_When..., as of June 2016, Ayumi's "Together When..." has topped 3.3 million in sales digitally, exceeding all physical and digital singles she's released. But the cited page,
http://www.allmusic.com/artist/ayumi...8915/biography, doesn't actually reference this.
Does anyone know if this is the case? I'd be excited for Ayumi if this is true, but I think this seems a bit excessive in estimated sales?