Umeko Yamada

Yamada Umeko, under the stage name "Sawamiya Erina", is a 16 year old idol, famous for being in commercials and as a new personality on the Hot-Blooded Banish Academy variety show, where she co-hosts a segment on girls who play sports. She is naturally athletic

Before she became an idol, Umeko was a national level kendoka. Because she was able to score a point against Sakaki Ura, she became known as the "second genius"; however, she quit kendo because of her frustration at her inability to beat Sakaki Ura.