I think it is the nominative case hope this helps you
It’s called an onomatopoeia, they are used a lot in comic books. :)
The answer is straight bars
Answer:
1. Where are you now?
2. Tomorrow, what will you do?
3. Tomorrow, what is the nihongo jungyo in the body?
4. What can you do?
5. What are you in to the other side of the world?
6. I'm in the right place. What is it?
7. I'm in Yu bottle Kyo now. What is it?
Explanation:
Some might be wrong but I hoped this helped!