Cool game! The graphics are really good, I enjoyed the art style a lot, but unfortunally, there was no sounds nor music, that would have added even more to the ambiance!
The game is really enjoyable, even if I would have liked a bit more machanics other than "every attack deal -1". I cannot say that the game is "simple", because obviously, there is a LOT of work here, I mean, a turn-based RPG in such a short time is impressive, but it's missing a little thing that would add some strategy and replayability.
Honestly, this is a nice entry, I spent a little bit of time on it and it was really pleasant ^^. It lacks a bit of polish, but hey, 7 days is very short ;). I would love to play an updated, more complete version, if you plan to iterate on this =)