Board Thread:General Discussion/@comment-6192846-20140331233900/@comment-24760083-20140607172252

Well, I was trying to connect "more" songs to this theory, then I re-heard re_birthday and became really shocked with the amount of info it has o_o

When Irregular says that he starts adding new words to the lullaby, it makes obvious the connection of the song with Wordplay and Clockwork Lullaby, but what really mattered for me was its connection with Heavenly Yard.

I just became more convinced of the fact of Sickle being the Mysterious Rin girl, as she gives special treament to Irregular, since he can do the same thing she can: to change something by adding/creating words in a song (lullaby). I think Sickle perceived Irregular's potential, or have seen his as an equal (and tried to protect him), or even the possibility of leaving him as her heir.