Stairway of Time Manhwa is also known: 時間的階梯 / 시간의 계단. Stairway of Time is released in 2019 and you can read it on the website SAWAMICS.COM
– Summary :
What if you could save someone you love before they die? Jihoon and Yuna were known as the cringey, lovey-dovey couple of Sehyeon High School until Jihoon suddenly… died. 14 years later, Yuna has an opportunity to go back in time. Will she able to change fate? Or will she uncover secrets that were better left hidden?