Superman's speed in comics varies depending on the storyline and the writer. Generally, he can fly at supersonic speeds and even approach the speed of light in some cases. His speed is often used to save the day and overcome impossible odds.
Maybe he uses some new jutsu. For example, he could have developed a special chakra - based technique that allows him to manipulate the air currents around him, much like how some wind - style jutsu work. This would give him the lift he needs to fly.
The secret of bats flying at night is that they use ultrasound to detect their surroundings. Through experiments, scientists found that bats emit ultrasonic waves from their mouths when they fly. This sound cannot be heard by humans, but bats can hear it. Bats transmit and receive ultrasonic waves to identify obstacles and prey, so as to avoid bumping into things. This discovery inspired scientists to equip planes with radars so that they could fly safely at night. Therefore, the night flight of bats solved the problem of flying at night for people.
I'm not really sure. It depends on how you define a 'story' and what kind of bugs you mean. Some bugs might have no stories associated with them at all.