Boyfriend and girlfriend in Tokyo and they are in awe of the huge modern metropolis that buzzes like a beehive day and night. After a day of sightseeing, the couple decided to take a walk in the evening and accidentally walked into the territory of Keroshi, a guy with green hair who paints all the walls with graffiti. Immediately, a group of guys formed around the couple, they were on their guard, because the feds had been chasing Keroshi for a long time and everyone thought that our heroes were mishandled Cossacks. But when they got to know them, it was immediately offered to hold a rap battle, in which you will also take part in the FNF KeroKero Underground on the Boyfriend's side.