making a manga with no experience

Not that I know of. There haven't been any official announcements about Isayama starting a new manga project.

It was super fun. I got to use my imagination and draw whatever I wanted.

Yes, he is. Junji Ito continues to create manga and surprise his fans with his unique and creepy stories.

Well, first you need to have a great story idea. Then, do some sketches to visualize your characters and scenes.

The initial step in creating a manga is to determine the genre and theme. Decide if it's going to be action, romance, fantasy, or something else. Then, start fleshing out the basic story framework within that genre.

First, you need to have a clear story idea. Think about what kind of characters and plot you want to create. Then, start sketching out your characters and rough storyboard.

I haven't heard any news about Hajime Isayama creating another manga. Usually, such announcements would come through official channels or reliable sources, and there haven't been any of those yet.

Not that I know of. But you never know, he might surprise us in the future.

Definitely not. Sharks manga often have their own charm and value. There's no reason to make fun of them. Maybe you misunderstood something.

Well, the second step often involves sketching out the storyboard. This helps to visualize the flow of the scenes and plan the composition of each panel.