I am currently reading a story titled “妖艶くのいち～濡れた花弁” (Unofficial translation: “Voluptuous Female Ninja: Wet Petals”). Early on in the story, a female ninja named Hasumi foils an assassination attempt on her lord. The assassin, who had both his hands sliced off, runs off into the bamboo forest. Her lord orders Hasumi to pursue the assassin and make sure he does not get away. She does exactly that. In fact, she manages to get in front of the assassin and cut him in two. However, as soon as she has done so, the following happens.
In case you are curious, one of the ninjas is gloating that she fell into their trap, another one is cheerfully explaining that the ninja that she had just cut down was bait to lure into the aforementioned trap, and one more boasts that she cannot escape them. By the way, this group of ninjas calls themselves the “竹輪房殺の陣” (Unofficial translation: “Fish Sausage Link Killing Squad”), which is actually pretty funny. I will leave it up to you to figure out why the name is funny.
With that said, the only part that I have not been able to figure out is the word “ズオオオオオ.” I tried to look it up in The Jaded Network (http://thejadednetwork.com/sfx/), but it is not in there. I also tried to Google “ズオオオオオ,” but I had no luck there.
If I had to guess, the word seems to indicate the sound of dropping down from a far height. However, I would very much like to hear everyone's thoughts on the meaning of the word.