"I told myself I would end this here, and I will not fail that. Not here, Not now! - MaximusTheBlueWolf (Makishimasuzaburūurufu, マキシマスザブルーウルフ)
Basically the stand just got a buff to armor and power along with speed.
Wild Slasher: Rouge Night Stereo have a purple neon look.
Manifested at a urgent and desperate time, Wild Slasher: Rouge Night Stereo gives it's user a great boost in power, speed and makes him very tanky with super armor.