IMPORTANT: The FINAL set, end of 'Project Zero' (Please READ) (Pixiv Fanbox)

My only fear about opening the new tier known as 'Project Zero' was the burden and pressure I'd have to face making a new grand set that is worth 700 yen AND within a month. It's not easy trying to make a massive project with 100% effort in just a month. Especially when I have work all the time and need to enjoy my own social life. So if you bear with me for one more month, I'm going to create 1 more Final set for "Project Zero" and eventually end it weeks prior. One last set :) And I'll probably start using Hiccears or Booth more often. With that being said, there's one last thing to consider. What set should I make?? looking for something that can take 500+ pages and everyone can like. ideas I thought of was a - My hero academia set (Kill UA) - An alternate story where Callus invades the underworld from Sword art online - The HS2 Set with the agent. Although it may take WAY over 500 pages and maybe longer than a month.... But the story I have for it is pretty nice. If you have any ideas, feel free. AND please make sure it's something you think everyone would like