I wouldn't say that this is the worst anime ever. But if it were me, I would rate it a score of 6.0. Instead, I rated it a 1.0.
The series revolves around Yuri crying every once in a while, and her students try to help her get over her fears. But sadly, she's not conquering her fears and her cries; she just likes to cry.
Story: I didn't get the plot at all. Why does a teacher have to have sixth grade students join an alien party and fight aliens? I don't get it. Little kids are NOT supposed to be fighting with frightening things (especially on rollerblades) until they're eighteen. I know this is a little bit like Sailor Moon or Card Captor Sakura and whatnot, but this anime has always been the darkest and weirdest anime I ever seen. And the worst thing about it is the main character crying every five seconds. Please review the characters below.
Animation: The animation, well, more like other anime, but its artwork isn't too bad. But the bad thing about the animation is the crying and everything. Like when Yuri grows the white hair for some reason, and her eyes growing while she starts crying big tears.
Sound: The audio and music is an absoloute mess and annoying. Even the themes are annoying. The English Dub was annoying and did not fit the characters at all. The kids sound like teenagers or something not young kids. And the music was absoloutely annoying, I'm dead serious.
Characters: The characters especially Yuri are the only mess in this show I've ever seen. But the borgs I think are somewhat cute, but are just strange. Yuri, the main character, cries about everything. Spoilers: She cries while playing a recorder, she cries when she takes a bath, and she cries about aliens (mostly). She cries about everything else, too and just doesn't seem to cry of happiness.
Overall: 1.7/10 this is the strangest anime I ever seen in lifetime and I would not convince my kids to watch it (not even if they're old enough to watch it).