She is her half-sister. She has been favored by her father since childhood and despised by her half-sister.
The childhood sweetheart next door who grew up with her sister treated her with kindness and won her heart lightly.
The senior who is two years older than her in college is persistent in her pursuit and treats her with every possible care.
At the same time, her life had changed.
The tone is sad, and the main direction is still to be determined.