Midori no Himegimi

"--I will give you the right of succession to the first throne." One day, Princess Alice was suddenly summoned by her father, the King, and he told her that. Alice, who had no particular interest in the throne, was puzzled, but she was shocked when her younger brother Leon, who was originally the first heir to the throne, treated her coldly! She decides to run away from home rather than being hated by her younger brother...? [Translated from NovelGame]