I learned something kinda interesting about this post. I got curious whether or not there was an actual vocaloid song this was tied to after updating the commentary and it turns out that the artist originally drew it (along with a few others) as a cover for an imaginary song that didn't actually exist https://x.com/huseso/status/1015502829341949953/photo/1

去年8月くらいに作った実在しないボカロ楽曲を想定してイラストを描くタグ #空想ボカロ楽曲　今年もまた定期的にやっていけたら良いなぁ…
使用はご自由にどうぞ、結構楽しい。

And then someone was inspired by the piece and really did create a song for it:
https://www.nicovideo.jp/watch/sm32262029
https://youtu.be/QgOjfMcbp_w