Sypnosis:

A sudden, ominous premonition strikes—no, wait, it’s actually a warning signal from the knees of the custom-made maid, Roboco. It’s a sign that the everyday comedic anime life of Bon-Bon, an ordinary elementary school student, is about to shatter. Then, one day, a group of individuals who have crossed through rifts in time and space gather together—they are Roboco from vastly different worldlines: a classic battle shonen universe, a hardcore sci-fi action dimension, a Showa-era gag manga reality… in other words, the Roboco of the Multiverse.