Bump Combat
When you talk about the original Ys games, the term "bump combat" is almost certainly the first thing you will hear.Popularized (albeit briefly) in the 1980s by games like Rogue, our very own
This system was utilized in the original
In the revitalized Ys I, upon leaving Barbado for the first time, you are given a single tutorial screen with instructions on how the bump system operates.

Many players find that the best way to handle this system is to actually come at enemies diagonally, as demonstrated in the image below. This allows you to more easily pin enemies in a corner or on a wall without them being able to turn around (like in a back attack) and hit you for damage of their own.

Although the system takes some getting used to, it can lead to a surprisingly zen form of RPG combat. I absolutely recommend that you give it a whirl for 15-20 minutes before passing a final verdict on it.