Yeah that’s a big letdown. The new track in ALKA–which sounds like Philosophyz–is called ‘Twinkle of Alcor’ and that’s like the only new clue. Much time was wasted on Wikipedia for this. Alcor is a star that’s like barely visible because --as seen from Earth–it’s very close to Mizar which is part of the Big Dipper constellation. The Big Dipper can be called ‘The Seven Stars’ in Japanese. The star on the end of the “handle” is called Alkaid, and that name comes from an Arabic phrase for like ‘Leader of the mourning daughters.’
So there’s stuff there that fits the story’s motifs, but it feels pretty arbitrary and unsatisfactory.