|Name||高良美海 (Takara Umi)|
|School||Saga Tsubaki High School|
|Hobbies||Singing & Dancing; Banquets; Shamisen|
|Favorite Food||Sata Andagi|
She is a second-year student at Tamamiya High School and has a twin sister. She is comparatively steady though she is as active as Miku, and it is miumi's role to look for the lost miku. She likes singing and painting, and has a soft side to artists. Umi believes in her sister's intuition, and basically leave it up to miku to do what she wants.