Yay, thank you for your kind words!
I decided not to add purple hearts to Harun, to add a bit of mystery around him :)
As for the ending song, is by MyëVe, but I don't think she has ever uploaded it to youtube (She made Chasing the Stars song, too). I'll tell her to share it publicly if she hasn't done it yet. And when I add the full credits you'll have the chance of listening to it in the game!