
SPOIL
If I remember correctly, the girl Jumi withnesses the boys having a fight. We learn about their situation, that they are in a complicated relationship, like they broke up but still are close to each other, and then they get together again, and this goes on and on but their problems aren’t solved. Jumi becomes a friend of them and supports them. But slowly she falls for one of the boys, Hee bum. She tries to hide it but then it goes into the light ( don’t know if my sentence is correct haha). She is rejected but since the boys relationship is complicated and she has always been a support for Hee bum, Hee bum’s feelings (that the other guy (don’t remember his name) hasn’t really treated wery well, even if he has his reasons) begin to change...

Spoiler !
So basically it started with the two guys broke up. One of the guy asks her to help him get back with his ex. While she was helping them, she fell in love with one of the guy. Even though she likes one of the guy, she still help them to get together. The two guys managed to get back together but it doesn't really last long.
It's still ongoing and I haven't read the raw so I only know the story till there.

SPOILER
I read this story on the translator's tumblr a year ago. The intro has been explained by the commentors above BUT the endiiiiing. Basically, Jumi (the girl) ends up as the winner here she end up with one of the guys. Which is really a satisfying ending since majority of the readers are actually in favour of her and loved her.
I've been reading the comments to see if I should give it a try, but what is this really about?
A girl who helps two guys get together?
If that's the case, then please tell me she doesn't get involved in the relationship directly(as in, no shitty love triangles please) but more as a platonic friend mediator.