I don't really understand where all the praise for the game is coming from. My main gripe is that the battle system seems to be just about tapping enemies and mashing the D-pad until you get the fusion attack thing. The only reason I can see that it is tricky at first is because they don't really explain the fighting properly and basically leave it up to you to figure out for yourself.
The characters are pretty uninteresting and the dialogue is dire as well. I'm only up to the start of the fourth day, maybe it gets better, I don't know, but I don't really have any urge to go back to it and find out any time soon.
Stay with it until the 7th day, maybe another 2-3 hours away. It will start to pick up intensely