Iribitari Gal ni Manko Tsukawasete Morau Hanashi
(the "Stay-over Gal") decides she's going to "borrow" the protagonist's "Manko" (which, in this specific slang context, usually refers to a personal space/item she’s taken a liking to) The Unexpected Roommate "Hey, I’m coming in!" iribitari gal ni manko tsukawasete morau hanashi in english
The work is widely circulated on adult manga aggregation sites. Due to the nuances of translating Japanese slang and verb conjugations, readers may find the title listed under slightly different English variations, though the core content remains the same. Iribitari Gal ni Manko Tsukawasete Morau Hanashi (the