Sodachi Oikura

Meet Sodachi, Araragi's childhood buddy who's as competitive as they come, earning her the unfortunate nickname "How Much"—a play on her surname that she absolutely hates. She was the class president in their first year, striving for the name "Euler," but that never quite stuck. After a major mishap involving a stolen math test, where everyone pointed the finger at her, she ghosted school life altogether. Once a math whiz who even tutored Araragi, her ulterior motive was to get him to notice the chaos at home. After a rough time, she switched schools and faced a tough re-entry.