User blog comment:Damesukekun/Unreliable Romaji Sources/@comment-189.130.216.158-20180602032654/@comment-26239285-20180602082901

If you are specifically after the romaji for that song, it's available here.

I checked out half of that song (NB it's an illegal reprint) and did spot checks on few other songs at random over the years and the romaji seems OK to me.

I noticed that they had "chiisa na" when the vocals were "chiisai" but that's probably just a typo.