For those who have played Fire Emblem: Three Houses on the Switch and enjoyed it, I dare to say that it is a must-play. Personally, having bonded with the characters from Three Houses, it was a motivation for me to see and "relive" them all. In terms of story, so far (I'm at 12 hours), it is very satisfying, not like Three Houses of course, but it is understandable since it is a warriors game. Essentially, it is the same story but in a different timeline, as it is set in the same world with the same characters, but the main objectives of the characters are the same with different developments. Another interesting aspect is that the characters change their appearance, just like they did after the time skip in Three Houses.
The most important aspect, which is the gameplay, is not purely strategic like the previous Fire Emblem games, but as the title suggests, it is a warriors game. So, buying a warriors game for the first time, I didn't know what to expect and had doubts, but this particular one is incredible because it combines the classic hack and slash with strategic elements and unit building, just like the classic Fire Emblem games. The only negative aspect is the camera, which can become annoying in some specific movements.
Finally, I would recommend someone who wants to play Three Houses and hasn't done so yet to get this one first and then get Three Houses, because if you are interested in the story (which is very good in Three Houses), it spoils some basic things. If someone is a fan of warriors games and is only interested in the gameplay and has no intention of getting Three Houses (which I would recommend buying because it is an amazing game and one of my favorites), they will still definitely be satisfied with this purchase.