The suicide note from the one I secretly love

Min Geol had a crush on Tae Eun the younger brother of the cafe owner that she often came to for a year. Suddenly one day Tae Eun asked her to deliver a letter to his older sister. It turned out to be a suicide note. Min Geol used to suffer the pain from her friend’s death last year, so she decided to return the letter to Tae Eun with the hope of helping him get rid of his anxiety