This was his self-created skill, which he called—
"BIG FLY"!
Meaning bold flying—so long as one has the guts, they can fly to the ends of the earth.
With one massive shot, a huge missile composed of twenty thousand bullets materialized in the air, and under his control, it hovered in front of him like a maglev train.
He jumped on it.
Grabbing a protruding part that could be gripped.
Then, with a thought, the missile shot forward at an alarming speed!
Was there any vehicle faster than his missile?
Except for not being very safe and not usable within the city, there basically wasn't much difference.
Soon—
He arrived at the next Deep Pit, marked "012." It wasn't until he reached the bottom that he saw the Rainbow Portal that should have been there was gone.
After visiting several Deep Pits in succession, he found no trace of the Rainbow Portal.