Code Mystics’ Last Blade update
#PSVita fans: unfortunately Vita patches can’t currently be issued, so #LastBlade2 crossplay with the #PS4 rollback update is off for now. Hang tight, though. We’ll fix that as soon as we’re allowed.— Code Mystics Inc. (@CodeMystics) May 7, 2020

Nice video to explain what they do exactly, explained for everybody. Now Samurai Shodown 5 Special, King of Fighters ’97 and Garou: Mark of the Wolves have it.
KOF2002UM and KOF 98′, someone?