King of Fighters XV, much like the prior games in the series, feature what are called reactions or pre-bout cutscenes. Here, two characters will converse regarding a number of things. Sometimes they’re friendly, sometimes they’re not so friendly. Either way, it’s a nice break between the fighting where newcomers and veterans of the series can find out more information on the characters.
Source: N4G PC Heres All The King of Fighters XV Reactions Weve Found So Far