She is a 16-year-old second-year high school student of Sanada West High School. Her friends and classmates call her Yassan, but since Ikushima once referred to her as Yasunaga-chan, this could just be a nickname. She is a classmate of Takahiro and Takahiro’s Friend, and a known acquaintance of Habara, Ikushima and the Self-conscious Woman. A girl who wanders by the riverbank in search of her fated encounter, which is an act from a novel she is writing, she happened to chance upon Hidenori who parallels the man from her novel who has the power of the wind. Although she can converse casually with her classmates, she speaks profoundly around Hidenori in hopes of generating a fantasy scenario. She gets furious and violent when this fantasy is disturbed.

Daily Lives of High School Boys
Roaming the halls of the all-boys Sanada North High School are three close comrades: the eccentric ringleader with a hyperactive imagination Hidenori, the passionate Yoshitake, and the rational and prudent Tadakuni. Their lives are filled with giant robots, true love, and intense drama... in their colorful imaginations, at least. In reality, they are just an everyday trio of ordinary guys trying to pass the time, but who said everyday life couldn't be interesting? Whether it's an intricate RPG reenactment or an unexpected romantic encounter on the riverbank at sunset, Danshi Koukousei no Nichijou is rife with bizarre yet hilariously relatable situations that are anything but mundane. [Written by MAL Rewrite]