Yui Ishikawa is a Japanese actress who was previously represented by Sunaoka Office but now works for mitt management. Prior to becoming a voice actress, she worked mainly on stage. Her specialities are classical ballet, jazz dance, and tap dance. Before she started as a voice actress, she was a stage actress and has been voicing radio dramas since 2007.

Mikasa Ackerman is a fictional character from Hajime Isayama's manga series Attack on Titan. Mikasa is introduced as a citizen of Paradis Island living with the protagonist, Eren Yeager, and his family, who took her in following the deaths of her parents in an attempted kidnapping. When giant creatures known as Titans invade the area and eat Eren's mother, Mikasa and Eren become members of the Military and join the Survey Corps—an elite group of soldiers who fight Titans outside the walls and also study the physiology of Titans in order to know what they are fighting. Mikasa's main motivation for fighting is her love for Eren, of whom she is extremely protective. She has also appeared in video games and the anime adaptation.