This is my personal favorite game in the Ys series. It has my favorite combat system and Adol is your playable character for this Ys game. I love a good challenge and this is the most challenging game in the Ys series. Many people won't ever complete it on Normal difficulty (you can choose an easier difficulty though). The boss battles in this game are extremely challenging, yet not cheap in the slightest. You need to learn how to dodge all enemy attacks and you will feel great about doing it with this fantastic combat system.
Theres nothing special about the storyline or graphics in this game, its obvious that everything was spent on developing the combat system and boss battles. You have a main town that you visit for supplies and forging new equipment, while traveling the world for new dungeons to explore. Theres lots of secrets, upgrades and new abilities to find throughout the game. Theres also some small sidequests you can complete for achievements and other rewards.
The game will last you around 15 hours and you unlock a Boss Rush aftering completing the game. If you like action RPGs, this is a must buy.