Admittedly, I am a sucker for dream world settings, and you definitely pulled off a beautiful & atmospheric dreamlike sound in this OST :3
Forgive me as I don't really know technical terms for describing things, but I really like how the warm/calm atmosphere is complimented by the slightly eerie/disjointed parts that really sell the dream environment!
I am also a sucker for big plot points being reflected clearly in accompanying music, so I love your idea & execution for 'Janus'. The gentle, bittersweet melancholy feeling of the track perfectly represents the scene you described :D