This is https://e-hentai.org/g/506629/5e127e62c7/ with the missing front & back covers attached & the joined pages split into 2 for those that prefer it.

The scan gap on split pages was reduced but not eliminated as the pages are slightly skewed.
There's a lot of weird page sizes which I think are from the scanner auto-paging the scans instead of doing it by hand. Based on the page dimensions I split 1 page that didn't have a scan seam.
If you want all double page graphics to display right in a comics viewer you'll have to add 2 blank pages.
This display problem is an indication that some of the odd sized pages are either 2 pages not split or that there's missing pages from the book.

The gallery title is different to match up with the wording on the cover.