My Enemy First Love Raw

I have a first love who is like an enemy. She is the older of the twin sisters, ‘Ji Yura’. The one who had her heart harshly kicked and ridiculed in her childhood. That’s why I changed my first love. As ‘Ji Yu-ra’’s younger sister ‘Ji Yuri’ who comforted me when I was ridiculed. But then, as a college student with painful memories, Ji Yu-ra, who was like my enemy, appeared again?!