A Tweek x Craig and a Mob x Craig copy-bon doujinshi! Scanned by me (Adorable Doujinshi Scanlations) https://adorable-scanlations.blogspot.com/

the first few pages are pages from this doujinshi - https://e-hentai.org/g/1544933/8e33a2b662/
I think they were a preview before that doujinshi came out.

Also page 10 to 11 is a change in the story. It's a little unclear so I wanted to bring it up.

scan #251

PS Thanks kaito sakine for the title name of the doujinshi!

direct download link - http://www.mediafire.com/file/x21zvoyrqj3new8/%2528The_Southeast%2529_South_Park_copy-bon_doujinshi.zip/file

the cover says ゴツコアリド (gotsukoarido) (?)

I think that's the title

Base +6, Chanel Williams +7

@Kaito sakine
No, it says ゴッコアリビ (gokkoaribi)

Base +7

https://www.pixiv.net/en/artworks/42238782

Base +37

I can't say for sure that the リ is meant to be a ソ with the stroke made vertical, but that's the simpler explanation. Alibi in Japanese is アリバイ anyway.

Base +21