Introduction Chicago Fire & Relationship

This story has 9-1-1, 9-1-1: Lone star, Station 19, chicago fire, and danganronpa crossover. There was one OC who he's working with kisaragi foundation. OC name is Yoshi Kage and his sister is Luciel. As soon they got called to help about train derailment. Jakounang, Buck, Sylvie, Travis, and TK meet each other and become friends. I wonder what's gonna happen next?