the story of both anime revolve around a Kid who try to escape from an evil corporation he run into the MC then he recruit the MC to protect him from the evil corporation ,a lady joined and help the Mc to protect the kid , later the kid and the MC find out some secret that link them with this evil corporation.
this two anime focus on action, mystries and suspense
the MCs of both shows have the same personality .
the kids have the same personality .
even the art style is the same .
Overall Karakuri Circus is the closest anime to No guns life and they both worth watching.