Nineteen, Twenty-One

from easy going scans: yun-lee is a girl who is carrying a huge emotional scar in her heart. due to an accident, she lost 2 precious years of her life, the time period between 19 and 21 years old. her life is empty. she is miserable, but still attending a preparatory school in an attempt to catch up with all the time she has lost. suddenly, one day on her way to feed some stray cats, she comes across a young man who seems to have what she has lost… the period between 19 and 21 years old. please address this work as a manhwa (korean word for cartoons) webtoon from naver