I’m with you in the dark

oh no.

What

What is wrong with Ralsei

There’s nothing wrong with Ralsei, it’s just that either something bad is going to happen or that it’s planned [WOO].

What bad thing, the roaring?

You could say that, perhaps.

Pretty sure Dess is the one singing don't forget...

No she got ran over, how can she sing that with serious injury?

⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠗⣪⣵⣶⠞⣃⣄⡻⠇⣿⣿⣿⣿⣿⣶⣿⡇⣿⣿
⢸⣿⣿⣿⣿⣿⣿⣿⣿⡿⢡⣾⣿⣿⠁⠚⠧⠿⠛⠜⢸⣿⣿⣿⣿⡏⣿⡇⣿⣿
⢸⣿⣿⣿⣿⣿⣿⣿⣿⡇⣿⡿⣛⣋⢅⣤⣷⡯⣥⣒⠎⣙⡛⠿⠿⠿⢋⡇⣿⣿
⢨⣭⣭⣭⣭⣭⣭⣭⣭⢡⣴⣾⠏⣴⣯⣍⠻⣿⣮⠻⢷⣌⢻⣧⢰⣶⡟⡅⣿⣿
⢸⣿⣿⣿⣿⣿⣿⡿⣥⣾⣿⠇⣾⢿⣧⣤⣤⣌⡟⢳⠿⠛⠀⣿⠸⢋⣼⣧⣛⣻
⢈⣉⣉⣉⣉⣉⢉⠁⣿⣿⠏⣾⢟⣨⣛⠻⣛⣻⡻⣿⣶⣮⢐⢡⣾⡈⣿⣿⣿⣿
⢀⣠⣤⣶⣶⡶⢒⠀⠿⡿⢸⡏⠼⢢⡩⣅⠈⢹⣿⢿⡛⢗⢸⢘⣟⣣⣛⣛⣛⣛
⢸⣿⣿⣿⡿⣣⣿⢿⡷⣭⠘⡀⠐⣻⣷⠪⣛⠦⣤⣤⣬⡤⢠⡈⢼⣇⣿⣿⣿⣿
⢸⣿⣿⡟⣰⣿⣿⣦⡛⢷⣾⣿⠡⣿⣿⣿⣶⣿⣷⣶⠶⣶⣆⢩⢸⣿⣿⣿⣿⣿
⢸⣿⣿⢱⣿⣿⣿⣿⣿⡦⠙⣿⣟⠹⣿⣿⣿⣿⣯⣷⣿⣿⢣⣿⡇⢿⣿⣿⣿⣿
⢸⣿⡏⣿⣿⣿⣿⣿⠟⣵⣷⠹⣿⣷⣤⣉⣥⣛⠘⣋⠛⢣⣿⣿⡇⣠⡹⣿⣿⣿
⢸⣿⣧⠻⣿⣿⡿⢋⣾⣿⣿⣧⠹⠿⡿⠿⢿⣿⠿⢋⣔⣻⠿⣫⣾⣿⣿⡌⢿⣿

What? It ain't my fault! She ran right in front of my bergentrück!

Also, more canonically, the end line says, "I'm with you in the dark".
We never see Dess, but Ralsei always appears in the dark world we visit. he's quite literally
with you in the dark.