Responses
I think it's that they are restricted by volumes, like a volume often contains 5-7 chapters so maybe it's out of the ordinary to make one volume with 10 chapters but they also don't want to make two volumes because they don't know if their first one will sell so they just rush everything
I don't understand the world of publishing for yaoi but I can assume the mangakas are restricted by a certain number of chapters. It's not like the webtoons that are available nowadays where the creator can go on as long as they want and make a serialized work.
Honestly wouldn't have minded more. My impression is that the story was pretty raunchy and as it stands, full of cliches, but I think if there were more chapters, there's be more affairs than just a wholesome fluff with a man that's seemingly a playboy.