Hm it seems this might need to be removed then…it isn’t anything new, this entry is only the first volume in a series of “best-of” chapter collections taken from
https://anilist.co/manga/81917/Hoshi-no-Kirby-Dedede-de-P…
The series would later be published as a "best-of" collection, featuring a selection of chapters that Hikawa considers the best, in addition to bonus comics
The English “Kirby Manga Mania” is just grouping these “best-of” collections, although there are only 5 volumes in that.
So I think this wouldn’t meet our guidelines to be listed (as we’d done with Junji Ito works previously) as there is new content, they are fine to be listed separately… we’ll need to add the other volumes, but this entry is correct as the first volume of that.