I had a dream tonight about Suisei and Miko releasing a song together. They had a release stream where they were commenting on the music video as it premiered with plenty of kawaiis and kakkoiis used. The MV was live action with two cosplayers dressed up as them although their heads were always framed out of shot, although I think both had their long black hair visible. I think Suisei was wearing the white seifuku with grey cardigan and Miko had matching clothes that weren't really any of her own outfits, although the outfits may have changed from shot to shot as I think Suisei had also her orange leggings and jacket with again Miko having some kind of matching clothing. At any rate, Suisei was immediately identiafiable, Miko less so.
The song was very emotional with lingering guitars and I think Suisei sang first if there was singing at all as the instrumental intro was fairly long. The cinematography was very impressionistic with, again, lingering shots of scenery and I soon realized some of the shots were directly taken from pic related. I supposed that Toko and the artist are easily enough reached and asked for permission, but wondered how the Tokomachifag who commissioned it must feel right now. Then the song picked up tempo, drums came in, and the visuals turned into an animation with "Miko" springing forward into a run as the camera spun around her to reveal a black hair with two Cerberus hair decs, black tail, dog ears, and Toko's voice started belting out. The commentary fell dead silent and I woke up.