Girls Band Cry First Riff & the usual girls band tagging bullshit

BUR #56450 has been approved by @nonamethanks.

create implication girls_band_cry_first_riff -> girls_band_cry

So Girls Band Cry First Riff is firmly a spinoff of the original Girls Band Cry series, with new bands and apparently new story, so a separate implied tag makes sense.

This leaves us with the fun question of what to do with the original tag. As a point of comparison, BanG Dream! Girls Band Party! was recently created after a second subseries called BanG Dream! Our Notes was announced. It was also long overdue since BanG Dream! It's MyGO!!!!! is vastly more popular.
There's obviously no way to tell how popular First Riff is going to be in this regard. Do we also want a tag for the original, or is it fine to leave as-is since there's only one subseries ?(Girls Band Cry RPG is an AU and doesn't really count). If it deserves a tag, what to even call it? I'd post another BUR for voting but I have literally no idea what to even call it, all the options I can think of are horrible even as a placeholder.

I don't think there's any need to create a tag for the original series since Togenashi Togeari will also be part of the spin-off. If the original characters are part of the spin-off as well, then "just the OG characters, none of the spin-off ones" doesn't make very much sense as a search, unlike with Bang Dream where there is a separate all-new cast with the new game.

This will (probably) be more similar to Shoujo Kageki Revue Starlight -Re Live-, where the game is an extension of the original show, with the original characters included, more like a sequel than an alternate universe. Shoujo Kageki Revue Starlight -Re Live- also doesn't have a tag for just the original show.

The bulk update request #56450 (forum #424286) has been approved by @nonamethanks.