A Paper Mario and The Thousand Year Door doujinshi! A super rare find indeed!
Mario x gijinka version of Ms. Mowz is the pairing in this
a gijinka Goombella and Koops make an appearance in this as well
scanned by me (Adorable Doujinshi Scanlations) https://adorable-scanlations.blogspot.com/
scan #115
direct download link to the translated doujin - https://www.mediafire.com/file/2ig1lptf09k1dk6/%2528C80%2529_%255BNemuriko_no_ki_%2528Nemuriko%2529%255D_Machuchu10_%2528Paper_Mario_and_The_Thousand_Year_Door%2529%255BSMDC%255D.zip/file