This is my first film in this franchise. I was surprised by such high ratings and decided to form my own opinion. At first I thought I couldn't bear to watch it. I'm a big fan of anime and Japanese movies, but even I was shocked by what was happening on the screen. It was especially difficult to get used to the animation of the characters. But still I overcame myself and was not disappointed. The plot tells us about an evil genius who is nostalgic for the past, sprays gas that turns adults into children. Now the children have to take care of themselves,try on the guise of adults, save their parents and the whole world. Sound really cool? Is it true? And so it is. The plot is full of deep philosophical thoughts and, at the same time, full of high-quality and really funny humor! I look forward to seeing the other films in the series.