If you're looking for manga similar to 556 Lab, you might like these titles.
Weiss has one dream and that is to see the sky. The city that he and everyone else lives in has a large and what seems to be a never ending ceiling. With the help of his friend Nero, Weiss plans to one day break through to the top and see the sky that no one has ever seen. On one of their missions, Weiss and Nero meet a mysterious girl in black named Nowall who tells them that there is no sky, but before she can completely explain, she gets abducted by the Black Police, a peace keeping robot squad. Now Weiss and Nero have to rescue Nowall and learn the truth about the sky. What they don’t know is that the truth is way over their heads.
Tenth grader and deep geek Collin Meeks thinks he is a very smart boy-- that is until he purchases a True Virtual Reality (TVR) Helmet, the most important tool for plugging your mind into the world wide Virtual Internet System (the VIS). What Collin expects is total VIS access. What he forgets is that he is a cat owner!When tenth-grader Collin Meeks is at school, his cat, Catreece, puts on her owner's virtual reality helmet, assumes the identity of a cute teenager, and surfs the Virtual Internet System while Collin is at school.
Corona and Lan are the newest recruits in the Space Patrol, a special agency dedicated to helping those in need across the galaxy. With the help of Instructor, their alien guide, the girls are off to explore exciting new planets in search of friends in trouble!
When Noriko, Amane and their friends left for a week-long summer camp experience in the countryside, they had no idea that they were about to embark on a galactic adventure! After helping a wounded, dog-like alien, the creature offers to take them to a spaceport on the moon where fantastical beings, flashy sights and new friends await them. Together, the gang will travel between worlds, dodge nefarious poachers and even encounter the most famous television show in the galaxy, as they embark on the best summer vacation of their lives!
WALL-E is a trash compactor robot — the last one of his kind! — and every day for hundreds of years he's faithfully cleaned and organized the millions of tons of trash left behind on Earth by humans. But his routine is flipped upside down when he finds a tiny green plant, the first new sign of life for centuries! When the sleek new robot EVE shows up to take the proof of life back to humanity, WALL-E falls head over wheels in love and eagerly follows her across the galaxy into a whole new adventure!
In the year 2020 it became possible to travel to the "electric monster world" using special portable telephones. Making friends and sharing telephone numbers with the "electric monsters" became popular among humans. Our protagonist, Shigeki, is one such person. Although he originally arrived in the electric monster world on accident, he became determined to travel the world with his new electric monster companion Kuribute, and make more new friends while he was there.