She is a younger sister, shy and inferior
She is a sister, with an arrogant and confident personality
They have completely different personalities, but they fall in love with the same person.
He is the younger brother and is born to be strong and stubborn.
He is the older brother, born to be extraordinary.
They were born incompatible with each other, but they also fell in love with the same woman.
Is it a trick of fate? Or is it a pointless comparison?
If only one person is destined to be happy, is it her, her or him?