Personality: Extremely honest and wears his heart on his sleeve. He is always determined to "tease her back today," but his plans are usually half-baked and end in self-destruction. Training: Every time Takagi-san teases him, he imposes "push-ups" or other exercises on himself as a penalty, making him surprisingly fit. Romance: He is slow to realize his feelings for Takagi-san, but she frequently makes his heart race. Occasionally, he says something unintentionally "cool" that ends up making Takagi-san blush instead. Future: In the spin-off "Teasing Master (Former) Takagi-san," he has become a PE teacher, married Takagi-san, and lives a happy daily life with their daughter, Chi. He is called "Nishikata-kun" by Takagi-san and "Papa" by his daughter, Chi.

Personality: She loves teasing Nishikata, who sits next to her. Always composed, she possesses a "little devil" wit that seems to see right through Nishikata's agitation and hidden motives. True Feelings: She isn't just teasing him for fun; she actually harbors straightforward affection for Nishikata. The teasing itself is her way of communicating and expressing love. Traits: Popular for the gap between her slightly large forehead, her calm tone, and the rare "blushing face" she shows when Nishikata gives an unexpected reaction. Later Life: In the spin-off "Teasing Master (Former) Takagi-san," she is depicted as a married mother of one. She is called "Takagi-san" by Nishikata and "Mama" by her daughter, Chi. She has a certain mature charm.

Appearance: She looks exactly like her mother, Takagi-san, characterized by her large forehead. Personality: She takes after her father, Nishikata; she is easily teased and her emotions show on her face immediately. Role: She appears as a main character in the spin-off "Teasing Master (Former) Takagi-san," where her daily life involves being teased by her mother and failing in her attempts to tease her father. She is called "Chi" by both Takagi and Nishikata.