There are several places. One option is to check out dedicated manga platforms such as KissManga or Manganelo. Another choice could be subscription-based services like Crunchyroll or Comixology, which might have it too. Just search for it on those sites.
You could check out platforms like MangaPark or MangaHere. Sometimes, they have the latest chapters of various manga, including the business proposal one. Just search for it and see if it's there.
I'd suggest looking on sites like MangaPark or MangaHere. But keep in mind that reading manga for free on unauthorized sites could be against the law and might not support the creators. It's always better to use legal and paid services if possible.
The main features of a business proposal manga are concise yet comprehensive content, colorful illustrations to draw attention, and a logical sequence of presenting information. It aims to make complex business concepts accessible and interesting to the audience.
A business proposal manga usually has clear visualizations of the proposed plans and strategies. It might also feature characters discussing the pros and cons in an engaging way.