A bittersweet love story. Cassain who fell in love with Sage and promised her that he will marry her in the future, but fate didn't want them to have their "Happy Ending" ** He suddenly found out that he has a heart disease (cardiavascular) but he kept it a secret to Sage because he doesn't want Sage to get hurt, but the Sage will soon find out about his illness but she's too late to confront him about it. ** English isn't my first language.