Hanzou is Sen Tokugawa's right hand—fiercely loyal and deeply committed to protecting the school. She takes her role seriously, backed by a crew of followers who match her dedication. As a fighter, she's formidable, relying on her power-detecting glasses to read opponents quickly and effectively.
Her personality's a bundle of contradictions. She's prideful and assertive one moment, then painfully shy the next—especially around anything remotely sexual, which tends to make her flustered. She plays into a lot of familiar character archetypes, which fans either embrace or roll their eyes at depending on the scene.
What's striking about Hanzou is her devotion to Sen, despite how poorly Sen treats her. Sen harasses her constantly, yet Hanzou remains utterly devoted—protecting her, obeying her, pretty much worshipping her. It borders on obsessive, and that imbalance in their dynamic is basically the core of who she is. No matter how badly Sen acts, Hanzou keeps coming back.
Content compiled by AnimeList.moe from publicly available sources.