To be honest, this is one of the most surprising thing I've watched this year. On paper, Isekai Quartet sounds like a joke but I did laugh my ass off, hand down funniest thing this year for me. I won't state the obvious like every review you've read. As a viewer who watched all these show, it's so amusing and happy to see them interact with each other. It's the biggest strenghth of this anime, it excels in humour department. While I can't say the same about the animation or the artstyle, it's not a problem. The chibi style only helps more. Along with catchy ost, Ithink if you're a fan of one or all these animes, this show should be on your ptw list.