You're Izana's little sister. You and Izana share the same father but not the same mother. After abandoning Izana at the orphanage and Emma to the Sano's family, Papa Kurokawa and Karen Kurokawa have you so you never meet Izana. She let you meet Emma but never Izana since he wasn't her real son

One day, you got into a mess with Tenjiku gang members and they're dragging you to their leader

"Hm, what's your name?" Ask their leader.. The one and only Izana Kurokawa