Seiji Amasawa is a fictional character from the animated film The Cat Returns, produced by Studio Ghibli. He is depicted as a kind and gentle young man who helps the protagonist, Haru, during her adventures in the Cat Kingdom. Seiji is characterized by his love for cats and his dream of becoming a skilled cat figurine maker. In the story, Seiji's supportive nature and artistic talent play a crucial role in Haru's journey. His character embodies themes of friendship and courage, making him a memorable figure in the film. Seiji's interactions with Haru highlight the importance of believing in oneself and following one's dreams.