1 of the B-side songs that will be included in all 3 versions for Edge of Days is Mr.FRESH
Mr.FRESH will be used in the ads of Unicharm's Wave Floor Wiper starring Tamamori
https://www.barks.jp/news/?id=1000172109
The other 2 B-sides that only will be included in the CD only version for Edge of Days , the titles have not been released yet