lol, are you serious?
You can't be fucking serious.
So what?
Oh sorry I didn't realize Calamity Trigger was the only BlazBlue game to be created and they immediately stopped doing anything with it or even owning the rights to it. They're definitely not making any more BlazBlue games and it's totally okay for you to use what they've done for your own game.
I don't have to do shit, you're the one who needs to get permission to ever even consider releasing something like this.
You don't need my permission, but holy shit this entire plan is stupid.
Your attitude is really out of line for being taken seriously, either as an artist or game developer.
If you're serious (holy shit please don't be serious), ff you want to spend time and effort hand-painting high-res sprites for your own personal fighting game, then for crying out loud make your own characters and animations and settings and do it properly.
High-res sprites drawn by Udon artists, who also did the Street Fighter comics, used in a game licensed by Capcom, with (initially suspected to be) competent designers at the head, vs. a guy with no gameplay experience upscaling and filtering sprites. Yeah, HDRemix wins.
I'M NOT TELLING YOU TO GIVE UP. I'm telling you not to jack BlazBlue and Guilty Gear characters and sprites. If you're serious about this then do it right. Nobody wants a BB vs. GG game made by some random chump who paints Jin like you do.