fe is, on easy and normal difficulty, among the easiest fire emblems ever so its good for newcommers. it also has a mode where you dont lose your dead units forever.
but if you dont like tactical games like fe, or if you get ocd over perfectionating your characters (grinding hours and hours to get skills to hand down to the child-units, instead of just finishing the game with your great enough but not absolute chars)
and hard/harder modes can be quite annoying if you don't know the right strategy (they're not really obvious whatsoever, its a fire emblem thing) or if you dont buy the dlc to easily level up chars.
i'd say, if thats your kind of game, then get fireemblem. if you feel like that might cause frustration to you, you might wanna think about kirby more