Ken Shinozuka

As the formidable leader of a local school gang, this imposing figure serves as Aoi’s protective older brother. Known by a unique nickname derived from his signature screw earring, he possesses a fierce loyalty that drives him to defend his juniors at any cost. Despite his intimidating delinquent persona, he maintains a surprisingly disciplined lifestyle, abstaining from both alcohol and smoking, a trait that Ranmaru identifies through his pure, inexperienced nature.