Board Thread:News and Announcements/@comment-4698889-20170726130044/@comment-2602:301:77AD:9270:4DCA:1BDF:172D:FB1-20170808144836

Other tidbits from his blog post:

-It's not just Rin and Len who's going to be in the song.

-He's going to finish writing the novel before making the PV