Hana Oshiroi is an easily excitable girl who joins the Half Priced Food Lovers Club at Karasama Private High School. Her hobby is writing erotic yaoi novels, having its characters inspired on various bento brawlers. She also has an inferiority complex due to being bullied.Oshiroi is girl of small stature and has brown hair. She is always wearing glasses and carrying her bag which contains her laptop along with her.She is a very excitable person and gets especially excited when something crazy happens to Yoh Satou or he does something out of character and often gets nosebleeds. As a result of being constantly bullied, Hana would often wipe other people's hands due to insults of being infectious towards her. Since meeting Satou and Yarizui, she eventually stopped doing so. Hana usually writes about what is happening around her, usually giving other characters nicknames or changing them slightly so no one suspects what exactly she is writing about. She often blurts out the nicknames by accident and whenever she reveals another "chapter" in her novel, Yoh is usually there to stop her by pulling on her hair.

Ben-To
The supermarket is an important building in any city, for they provide a convenient way to purchase a variety of food in a family-friendly, safe environment. However, these stores changes in the blink of an eye once the unsold bento boxes go on their nightly half-off sales! War breaks out and friends become foes as each person fights for honor, pride, and dinner. There are no longer any people in these supermarkets, only Wolves and Dogs—winners and losers. High schooler You Satou is painfully introduced to these battles after unknowingly stumbling into the war zone, but instead of choosing to avoid these nightly fights, he wants to join in. After seeing Satou's lack of fighting skills, upperclassman and Wolf Sen Yarizui invites him and Hana Oshiroi, a girl who enjoys spectating the brawls, to join her Half-Priced Food Lovers Club to show them the distinction between the Dogs and the Wolves. Together, they learn what it truly means to fight for your food.