Ado Tie-In

The Ado Tie-In was a collaboration with the utaite Ado. The collaboration involved two of her songs being added to Project SEKAI, and a VIRTUAL SINGER version of Usseewa being uploaded to the Project SEKAI YouTube channel. Both songs received SEKAI versions.

Songs

№	Cover	Song	Unit	Date Added (JP)	Date Added (EN)
01		Usseewa	25-ji, Nightcord de.	01/30/2022	01/28/2023
02		Odo	Vivid BAD SQUAD	02/04/2022	02/02/2023

Videos

うっせぇわ - バーチャル・シンガーver.（初音ミク）