Karin Kuchinashi. An ex-yakuza school nurse. She is naturally bright and has thoroughly memorized everything regarding medicine. While she acts like everything is a hassle, she is surprisingly caring. Words that are a bit chilling and specific to the yakuza often slip into her conversations. She has a downer personality, but her treatments are appropriate and speedy, and she often throws out blunt advice after finishing. She is a person of integrity who may offer kind words—still blunt, of course—to those who are genuinely in trouble. Rumors that she is a former yakuza circulate the school, but she pays them no mind. Because she loves tobacco, she smokes openly in her territory, the health office, rather than the smoking area behind the school building. She has no experience with 'that' (apparently she isn't interested).