Songs used:
Fall Out Boy - Centuries (official instrumental) [https://www.youtube.com/watch?v=J6GMKoHuuqM]
Liella! - START!! True dreams (filtered acapella)

START!! True Centuries

HOYO-MiX & Go Shiina - Kiana Kaslana no Uta (ft. Nami Nakagawa, Chalili, TetraCalyx, Hanser, Panic at the Disco, Fall Out Boy & Imagine Dragons)
Moon Halo X Kamado Tanjiro no Uta, featuring snippets from MSKWYDITD, Warriors and High Hopes.

Kiana Kaslana No Uta (ft. Panic at the Disco, Fall Out Boy & Imagine Dragons) (Mashup)

RegalHyperus's repository for Kamado Tanjiro no Uta mashups because of geoblocks. And a few others.