Tsubakino, one of Furin High School's Four Kings, invites Haruka Sakura and his new group of friends to the entertainment district--an electrifying place illuminated by neon lights. Emotions quickly run high after they bump into a group of vigilantes, hell-bent on protecting their territory in the same way Sakura and his friends protect their town. As he's drawn into another furious fight, will Sakura finally be able to turn to his friends for help against this new threat?!