The Trails of Cold Steel series. Haven't played them yet myself but heard alot of great stuff about them and the soundtrack is great. I'm just waiting for the first two to release on Switch to finally play all fo
It should be noted that the Trails of Cold Steel games are just one arc of a much, much bigger story. Right now the Trails series is divided into four different arcs each one containing several games: The Liberl arc (Sky Trilogy), the Crossbell arc (Zero Duology), the Erebonia arc (Cold Steel Tetralogy) and the ongoing yet to be released in the west Calvard arc (Kuro no Kiseki).
Unfortunately for people who want to get into this incredible JRPG series, all the arcs are connected between each other, and not exactly in a superficial, anecdotical way. You could play the first two Cold Steel games without having played any Sky or Zero games, but once you get to the third one you MUST have played the other arcs, specially the Liberl one. Because everything converges in Cold Steel III.
The Trails series is kinda like the MCU. You can just watch the four Avengers movies without watching any of the other Marvel ones, but you will lose so much stuff, context and background that it could end up being a negative experience.
So, for anyone trying to get into Trails... My recomendation would be playing the Sky Trilogy first (it's on Steam, PSP and Vita), then the Zero Duology (also on Steam and Vita, soon on Switch and PS4) and THEN you play the Cold Steel games. Alternatively, if you REALLY want to start with the Cold Steel games, you could play Cold Steel I and II, then Sky, then Zero, then back to Cold Steel III and IV. But you'll miss some references and character names here and there.