Umi Kousaka is a cheerful and energetic character from the multimedia franchise, The Idolmaster. As an idol, Umi brings an infectious enthusiasm to her performances and is known for her athletic abilities, which she often incorporates into her dance routines. She is part of the Million Live! series, where she stands out for her positive attitude and unwavering determination to succeed. In the series, Umi plays a pivotal role in motivating her fellow idols through her optimism and dedication, making her a beloved member of the team.