Nagisa Daimonji is a supporting character in the anime Cardfight!! Vanguard: Asia Circuit Hen. She is the younger sister of Gouki Daimonji and first appears in episode 14 when Kamui Katsuragi brings Aichi Sendou to Card Shop Handsome. Nagisa is a sweet and cheerful girl with a very strong crush on Kamui. She is deeply attached to him and ignores his lack of reciprocal feelings, openly declaring her love and stating her intention to marry him. Her determination drives her to go to great lengths to win his affection, including challenging Kamui to a cardfight with the condition that if she wins, they will marry. Her persistent pursuit of Kamui is a recurring comedic element in the story, often causing Kamui to try to avoid her. Her older brother Gouki cares for her and occasionally tries to keep her antics in check. Nagisa interacts frequently with the main group at Card Shop Handsome and enlists their help in her schemes. As a cardfighter, she uses the Gold Paladin clan and is skilled enough to challenge Kamui, though her primary motivation is not competitive success but rather her personal goal of marrying him. Across the Asia Circuit Hen arc and later series such as Link Joker and Legion Mate, Nagisa’s core personality remains consistent, and she continues to appear as a recurring presence in Kamui’s life.