In circa 2018, I was looking through NicoNico (a Japanese website sort of like YouTube, but comments are displayed on the video) and I was looking on the channel of Mafumafu (who is a Japanese singer) and found a cover of a song which has a music video. The thumbnail had two girls on it, and it wasnt in anime style, it was more like a cartoon. I watched the music video and I dont remember the lyrics but I remember the video.
The scenes I remember were:
A person sitting on a throne (likely a girl), with a mace(?) in their hand
The same person smashing a table with the mace
The person holding different weaponry(unsure If I am making this up or what)
A scene where the background was glitchy and the eyes of the 2 people are censored with Japanese lettering on top (I dont rememeber what it said)
I dont remember anything else apart from those 3 scenes in the video.
I do remember the person having blue or pink short hair, wearing possibly a yellow shirt? No, it was not a VOCALOID or UTAU song, if it was I would have remembered. The video was animated, I do not remember any live action scenery. The music was likely rock genre.
The video also led me to seeing many other covers of the exact song, with the exact same music video included.
Could it have been a fan made music video for Panty and stakling? There is music in the show they come from and their art style is anime like but a little cartoony. Stocking has blue hair with pink stripes and Panty is wearing a red dress. (I do not mean to flip you off with the photo! Its the Closest thing to what you described)