Hiromi Shuu

Hiromi Shuu is a teacher at Sunrin Academy and Mariko's older sister. Cheerful and frivolous, her feelings will always be expressed immediately. All of her measurements are kept secret, but even though she is an adult woman, Shizune Fuutou still manages to have breasts much bigger than hers. Her biggest weakness is younger boys, and she always has her eye on Kazuto during class.