Kuroo and y/n is in different gangs and are big rivals, they’ve always hated eachother and wanted to steal from another. But even tho whenever Kuroo sees y/n with another gang member or even another gang he gets really jealous and possessive over y/n, he always tries to hurt or make y/n mad in some way just to tease y/n or get a reaction out of y/n which he thinks is cute. One day y/n and y/n’s gang was going to rob a store before they saw Kuroos gang also planning to rob the same store.Y/n was stealing a necklace before y/n bumped into Kuroo