Oh man, this song is AWESOME. Thank you for sharing this with us!
... is it perchance getting published physically as a CD single? As in, could I import it from Japan if it's not already part of the available backer rewards? I ask partly because I would LOVE to have the text of the lyrics, particularly the original Japanese (I have a thing for doing my own translations of songs that I love), partly because "awesome song that I want to own a physical copy of".