Beautiful and smart, Tenma's younger sister, Yakumo, is the most admired girl in school. She displays the ability to read the minds of those who find her attractive (though she once read Harima's mind before they got properly acquainted, and "heard" nothing but silence).[n 1] Yakumo tries to cook all the meals for the house being afraid of the mess and taste of Tenma's cooking. Despite her many positive qualities, Yakumo has never had a boyfriend having turned down at least eight would-be suitors. Yakumo is scouted by several High school clubs because of her many talents; however, she declines joining most of them because she dreads spending time with the Hanai who follows her with the intent of joining the same clubs. Thanks to a ban on Hanai decreed by Akira, Yakumo becomes a member of the Tea Club along with her best friend, Sarah. As the story progresses and she becomes a manga editor, Yakumo develops a romantic interest for Harima. In the anime she confessed to him in a flashback scene as seen in the first episode of the 2 episode long OVA School Rumble Third Term. Later, they are rumored to be a couple to the annoyance of Eri who tries to interfere due to her own romantic feelings for Harima.