Spoiler!
Hosu was threatened by Mirae. Mirae will tell that Yuyu's project will have a greater loss. So Mirae suggested that if Hosu breaks up with Yuyu, Yuyu will be saved.
But in the second timeline, Mirae will find a way to separate the two but he didn't succeed.
Yuyu didn't come back to the original timeline.
PS. The couple ring is for Yuyu, not for Mirae.
But I am still furious to Hosu's decision. He should tell the truth to Yuyu that Mirae was threatening him for it they will come up a solution to save themselves and take a revenge to Mirae.
But in the second timeline, Mirae will find a way to separate the two but he didn't succeed.
Yuyu didn't come back to the original timeline.
PS. The couple ring is for Yuyu, not for Mirae.
But I am still furious to Hosu's decision. He should tell the truth to Yuyu that Mirae was threatening him for it they will come up a solution to save themselves and take a revenge to Mirae.
