Someone was able to identify this as Great Tomorrow (グレイト・トゥモロー) from U-PHONIC BGM VOL.2-A! There isn't any mention of this album anywhere on Google and YouTube. How weird.
Except on Norimono Video BGM Wiki: hxxps://seesaawiki.jp/norimono_bgm/d/%A5%AA%A5%D5%A5%A3%A5%B9%A5%EF%A5%A4%A5%B1%A1%BC