The wowaka Memorial Campaign was a producer tie-in celebrating the deceased Vocaloid producer wowaka's music career. The campaign involved the addition of four of his songs to Project SEKAI. All of the songs added were VIRTUAL SINGER only.
Songs[]
| № | Cover | Song | Original Singer(s) | Date Added (JP) | Date Added (EN) |
|---|---|---|---|---|---|
| 01 | 
|
Rolling Girl | Hatsune Miku | 11/14/2020 | 01/03/2022 |
| 02 | 
|
Ura Omote Lovers | Hatsune Miku | 11/21/2020 | 01/24/2022 |
| 03 | 
|
Unknown Mother Goose | Hatsune Miku | 11/23/2020 | 01/25/2022 |
| 04 | 
|
World's End Dancehall | Hatsune Miku, Megurine Luka | 01/14/2021 | 01/26/2022 |
Trivia[]
- On the JP server, Rolling Girl was released as part of the campaign while World's End Dancehall was added separately. On the EN server, these were reversed.
- The JP server's campaign started 10 days after wowaka's birthday.
- Another one of wowaka's songs, Unhappy Refrain, was added outside of this campaign.
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