Putting it all together, maybe the user is referring to a doujinshi series or a specific work, possibly by an author named Makoto Sakawa or similar. The jumble could be a mix of Japanese and other languages. Let me check if there's a known doujin or author with a similar name. Maybe "Markotsukawa" is a misspelling of "Makoto Sakawa," but I don't recall that name. Alternatively, it could be "Tokyosukawa" or another name.