Kago no Shoujo wa Koi wo Suru The Caged Bird Sings Theme of Love.

Synopsis

A boarding school academy where intelligent girls with attractive looks and figures are gathered. This academy is a special place unlike any other where an unusual physical exam and curriculum were established. On the day Chizuru transfers into such an academy, she encounters a girl called Fuyuko... This is the story of small blessings for the girls who come together through the experience of mutual hardships. (Source: Kadokawa, translated)