Asaka Narumi is a character in Cardfight!! Vanguard Anime. She's a member of Team Foo Fighter AL4. Her alias is "Assassin" on her team because of her strategy using Pale Moon units while switching cards in and out of the soul. It is shown that she has a major crush on Ren.

Better known as the "Assassin" of AL4, Asaka won her place by fighting her way up the ranks of Foo Fighter. Fiercely loyal to Ren, she treats her fights as a stage, operating with both strength and grace to fashion the ultimate show for him.

One year ago Asaka was scouted for membership in the Foo Fighters. Through relentless training, she became one of the top members of Foo Fighter, promoted into rank 3 of AL4. Resolving to grow strong enough to draw Ren's eyes to her, she turns around AL4's initial bout against Q4 by breaking Misaki's Tsukuyomi strategy.