Tsumugi Kotobuki is a high school student and a key character in the anime and manga series Kaguya-sama: Love is War, known for her sharp intelligence and cold demeanor. As the captain of the debate club, she approaches romance with a competitive mindset, striving to win over her love interests with her intellectual prowess. Tsumugi often contrasts with the exuberance of her friend Chika Fujiwara, creating a dynamic duo of contrasting personalities. Despite her initially reserved and somewhat aloof exterior, Tsumugi's interest in Kaguya Shinomiya's and Miyuki Shirogane's rivalry leads her into complex and unexpected emotional entanglements. Her unwavering commitment to winning and her deep-seated need for recognition fuel her ambitions and her secret desire to find true love. Tsumugi's character arc is a journey of self-discovery, learning to balance her logical and affectionate sides, which transforms her from a spectator to an active participant in romance.