Ys Origin does a great job explaining the past, it also features interesting characters that you can finish the game with (each one having their own unique game-play, equipment, short storyline and so).
For those who don't know, Ys is an old school action RPG (from the late 80's) that luckily didn't got extinct in today's modern video game industry (That strives to approach to the masses), the surviving series features a very solid and hardcore experience for those who delve in to it (No hands are held here, not suitable for some casual players).
Without delving that much in to the storyline, I'll start by saying that the whole game is set in a massively big tower with tons of floors where you'll actively explore till you reach the top, all because due to the fact you're part of a team that is looking for two mysterious female angel like characters who have disappeared and also they are fighting a mysterious evil that suddenly appeared on their land.
Just like the first of the series, it is based on your character progression (Status), based on your skill and how well prepared and equipped you're, you'll fight tons of different minions and bosses through out the game.
The game is fast paced, if you're used to a slower and less action based game, then do not delve in to this one, you'll have to be quick and prepare yourself to evade any possible attacks and at the same time plan how you'll attack your foes quickly before their defense is up again.
You're forced to play the game to unlock new areas as you progress but do take in mind that you're not only forced to a narrow path, you'll have some freedom of exploration to farm and grab new items.
As for the game soundtrack you'll be delighted, it is so memorable!
In terms of art style and UI they are all professionally done and will set in motion your connection to the game, giving you a taste of immersion (You'll have a good read, the game has a big script), character wise; some are forgettable but overall your experience with them is quite positive.
If you like Anime and you like oldschool games that are fast paced and hard, then this is the game for you!