UNI2 will make sure that you can react and anti-air.
UNDER NIGHT IN-BIRTH II Sys:Celes developers continue to shower us with glimpses of what's just around the corner. For example, just recently they have shown off a rare feature for the genre, the replay takeover. While exceptionally rare, it's one of the most useful features for anyone who takes practice seriously.
Naturally the developers had much love and appreciation coming their way, and if this reaction from the director Kamone is not heartwarming as hell then I don't know what is.
The latest feature seems to be on the same track as well. While in training mode, you will be able to toggle a little mini-game that will test how quickly you can input certain commands. While it's not some ultimate reaction test that will teach you to block every mix-up, it does make sure that you can input certain commands on reaction without error.
While the lack of mental stack makes it easier to react, I think this could potential prepare people for those moments when they need to quickly input an anti-air, or shove a super inside a gap in an opponent's blockstring.