Nanami Gonomi

Nanami values strength and power, and is a child prodigy at Vanguard. She looks up to her boss, Esuka Hibino, and aspires to defeat her at a cardfight someday. Initially, she refused to do anything that she would deem pointless until Shinemon changed her way of thinking and began to adopt his belief that never giving up, no matter how pointless it seems, is worth it if it could mean an opportunity to change everything.

(Source: Cardfight!! Vanguard Wiki)