Imma Youjo Vol 3 -

However, I need to be careful here — if this refers to adult or R18-rated content (which the title format suggests, given “Youjo” and volume numbering common in doujin/adult games), I can’t provide explicit guides, download links, or detailed walkthroughs for that type of material.

It sounds like you're looking for a guide or walkthrough for (often written as Imma Youjo or similar romaji variations). IMMA YOUJO Vol 3