What is even the battle system?

The first row of battle icons seems alright.

From left to right: melee, projectile, superpower, defense, autobattle for a turn, go to the second row.
I'm still playing with the second row.

The last one is, of course, going back to the first row. And the second to last one I think is autobattling for the rest of the fight.

From left to right: melee, projectile, superpower, defense, autobattle for a turn, go to the second row.
I'm still playing with the second row.

The last one is, of course, going back to the first row. And the second to last one I think is autobattling for the rest of the fight.