Himeyaka na Delta
Secret Delta
秘めやかなデルタ
Suzu Mochida and her mother work as live-in housekeepers at the home of the wealthy Nakatsugawa family. She secretly loves their elder son Shuichi who is handsome and kind-hearted. But their younger son Shinji, who has an inferiority complex towards his brother, keeps on thinking only about Suzu!
There are two other stories in this volume.