A pilot could be the main character. He's experienced in flying regular airplanes, but now he has to deal with the unexpected time - travel capabilities of this special plane. He has to be brave and resourceful to navigate through different time periods.
Maybe the time travel airplane is a top - secret government project. It malfunctions during a test flight and travels back in time to the age of the dinosaurs. The crew has to deal with all kinds of prehistoric challenges while trying to repair the time - travel mechanism to return to the present day. It's a race against time and nature.
One thing that could happen is that the airplane's interior could change to match the time period. So, if it travels back to the 1920s, the seats might turn into plush, leather - upholstered ones like in old - timey planes. The in - flight entertainment system could start playing music and shows from that era. There could also be a disruption in the normal laws of physics. Maybe gravity works differently, and people start floating around inside the plane as if they were in space, which could be part of the time - traveling experience.
The main characters could be a businessman and a tourist. The businessman is always on flights for work, and the tourist is on an adventure. They meet on the plane, and their different worlds collide in a romantic way.
It could be a pilot. Since he's in control of the plane, he would be in a great position to lead the time - traveling adventures. He could use his flying skills to navigate through different time periods.
Once, I was on an airplane. Suddenly, there was a strange flash. When I looked out of the window, the sky had turned a different color. The plane started to shake a bit. And then, it seemed like we were flying through time. I saw historical events unfold below. It was like watching a movie but in real - life. When the plane finally landed, I realized I had traveled back in time a hundred years.
It could be two children. One might be a shy boy who expresses his love through the paper airplane, and the other a curious girl who discovers his feelings through it.
I don't know as I haven't read the 'the little airplane story'. But it could have the little airplane as the main character. There might also be a pilot if it's a more realistic story about an actual flying airplane.
It could be a time - traveling villain from the future who wants to change the past to gain more power in their own time. They might try to stop Naruino from achieving their time - travel goals.
Without more information about 'the first time travel story', it's difficult to name the main characters precisely. But common types of main characters in time - travel stories include a person with a special ability or gift related to time. Maybe they have a strange dream that leads them to time - travel. There could also be an antagonist who tries to use time travel for their own malicious purposes, like changing history to gain power.
There might be a young and curious passenger. This character could be the one who stumbles upon the mystery or danger on the plane and starts the whole adventure. Maybe there's also an experienced flight attendant who helps keep everyone calm and plays an important role in solving the problems.