Sen Yarizui

A second year student who is the president of the Half Priced Food Lovers Club. Her skill in bento brawls has led her to be known as The Ice Witch. Her title comes from her accidentally almost buying a beer called Ice Cold (氷結 Hyōketsu) because she liked the design and assumed it was a normal drink. While usually calm, she's very innocent and does not particularly know a lot outside of bento brawls and can sometimes be pretty clumsy. She can be very stubborn as well, especially when it involves a challenge from another bento brawler. (Source: Wikipedia)