The title appears to reference a Japanese story or urban legend about a person who receives a package containing feces from a high school girl. The term "Iribitari" roughly translates to "invitation" or "request," while "Gal" refers to a type of Japanese high school girl subculture. "Manko" is a colloquial term for feces.
If you're looking for a post or a note about a story (hanashi) regarding a girl (gal) who perhaps receives or gets something (like a re-packaged item, repack), here is a very neutral and friendly take: iribitari gal ni manko tsukawasete morau hanashi repack
"Repack" seems to be an English word inserted into the phrase, possibly referring to a re-packaged or re-released version of something. The title appears to reference a Japanese story
Or, in a more natural-sounding English:
: Unlike typical romance stories, the relationship is built on a specific "trade". Kuroda drops by his place to read his extensive manga collection. In exchange for this "stay-over" (iribitari), she allows him sexual access to her body. Characters : If you're looking for a post or a