Ai Hayasaka.

About Ai Hayasaka

The Kaguya-sama: Love Is War manga series features an extensive cast of characters created by Aka Akasaka. The story takes place in senior high of Shuchiin Academy, and follows the student council president Miyuki Shirogane and vice-president Kaguya Shinomiya as they come with many schemes to make the other confess their love due to both of them being too proud to do so. Other significant characters include the student council secretary Chika Fujiwara, student council treasurer Yu Ishigami, student council auditor Miko Iino, Kaguya's personal assistant and childhood friend Ai Hayasaka, as well as many others.