You gotta make the music that's heard when Sanemi and Obanai approach the Infinity Castle. It's just so badass and haunting and I love it. This OST is also REALLY great. I can imagine Sanemi's parts with... You know who else. :D
Spoiler alert: I just love how sanemi (in the movie) is frustrated at the fact that he never encountered an upper moon. But little did he know that...😢