Well, I found this after misspelling lilypichu... I'm not sure how I feel about what I found...

couldn't find song on here so i make it myself

Sadistic Emotion (Disgaea 4)

source: https://mrgirlreturns.bandcamp.com/album/boundaries

Boundaries

Celestia13参加曲

Suiさん
SUZURONE
http://suzurone2013.web.fc2.com/
との合作

詳しくは下記URLを参照
http://www.zephyr-cradle.info/celestia/index.php?title=Apocalypsis

Cover of Dreams Dreams from Nights into Dreams

Original: https://www.youtube.com/watch?v=qOY5AdDcAjM

The full backing soundtrack for BNA - Brand New Animal
Minus the several variations of the OP and ED (Ready To and Night Running respectively)

1. Eldritch Cataclysm⚔️
Humanity fell into madness as the towering Old God gazed upon them, passing through the portal.