Kyōko Yoshizawa is a supporting character in the anime Tsuide ni Tonchinkan. She works as a teacher at Reinbou Junior High, where she teaches Japanese language and occasionally hosts a segment called Yoshizawa sensei no kokugo mono-shiri kouza to explain words used in the story. Her most defining trait is her obsessive one-sided love for the protagonist Nukesaku Aida. Though her outward appearance is that of a gentle and beautiful woman, her passionate feelings often manifest in extreme and frightening ways, causing those around her to tremble. When angered, she displays superhuman physical strength, as shown when she knocks out a wild bear with her bare hands. Her family also has a notable quirk: her grandfather is named Gokuaku and her father is named Akuzō, both extremely villainous-sounding names. Kyōko’s primary motivation is to win Nukesaku’s affection, which leads her into rivalry with other characters who also harbor feelings for him. She does not undergo significant personal development over the course of the series; her role remains that of a comedic supporting character whose exaggerated love and violent reactions provide situational humor. Her notable ability is her incredible physical power, which appears when her emotions boil over.