They have known each other for a long time. Until they were in their 1st year of college, everything has changed. Wonwoo - Become mute when he was 15 years old. Mingyu - Lost almost all of his memory because of a car accident. 세븐틴 He thought that it may be a great way to sent that letter. He did it because he wants to express his feelings and to stop himself from overthinking. But, something happened that makes him regret what he has done. Disappointed So Embarrassing If ever they will meet again, will everything change? Or it is the other way around? Started : April 6, 2026 Ended :