I love the story aspect of the game, it adds another layer of motivation.
Battles are decently balanced, all the attack patterns are crafted well, with just enough time to make a decision. Limiting the moveset just to selecting the ring and direction is very smart, it allows you to create some unique situations, although reduces their possible combinations at the same time.
The controls are a bit confusing for the default position of being in front of the boss most of the time. Maybe having a single button to switch the movement direction could make it easier? But maybe not ¦3