I was looking for official art of Creatures of Habit when I found art from its audio drama. I don’t actually know if the AD is fanmade or official, but do listen to it if you enjoyed the novel! The barrage mode is so empty, it looks sad 😭.
You can listen to it here. If you don’t understand Chinese, just let Google automatically translate the page. It will translate the subtitles as well. Just turn on barrage mode so it shows.