It's like if Touhou had a baby with FF14 raid mechanics. Everything is adorable. It'll make you hate your friends for coming near you when they were supposed to stay away, and it'll make you hate them 5 seconds later for running away from you when they were supposed to stack. I highly recommend it. It might even be a fun game to try to get some people from here to play together, since it's pretty low time investment, intuitive, and doesn't necessarily require voice chat. (It's better with voice chat, funnier without it)
I played an extreme level trial in ffxiv for the first time and one of the veterans was giving us shit for not preparing. How does one prepare for something like this?