lovely game, I enjoyed it lots and the audio was relaxing. Also, nice use of the in-game tutorial style, i could follow easily.
One balancing issue i found is, that i often just over-jumped enemies and did not really use the big sword, maybe you could have forced the player more into switching swords more often/strategically... maybe having a set number that a sword can be changed.
but regardless, great idea and excellent work on the endings and game feel, good job!