China Kousaka is one of the main characters in the anime series Gundam Build Fighters. She is a talented artist and the best friend of the protagonist, Sei Iori. China attends the same school as Sei and shares his passion for Gunpla, the model kits based on the Gundam series. She supports Sei throughout his journey in the world of Gunpla Battle, providing emotional encouragement and aiding him in his battles. Her character is known for her kindness, creativity, and determination, making her a beloved character in the series.