Long Lost Buddy l heeseung ff

Han goo-rin, and her childhood crush and best friend heeseung. her feelings grew for him and hid them for her self. But one day they were seperated. But then he later got transferred to the same school. The little that she did know that the new transferee was her childhood best friend. Will they be able to meet again? Will she be able to confess her feelings to her childhood crush aka her best friend??