To begin with the flaws of this series...
The story kind of hops here and there while you try to connect the dots.
The actors are good but I think it's the direction that lacks.
The story is mediocre and predictable.
There are 3 couples but I guess the screen time given to the 2nd couple is comparatively less and 3rd is next to negligible.
I almost thought they won't end up together.

All the couples could have easily talked it over and got together in the 2nd epi itself coz the reason for their rejecting each other is childish.
Like the 1st couple are BFFs
Both stay close like flower and it's bud
Both don't like anyone else coming in between them
Both sneak peek at each other but when one of them confesses his love the other one straight away rejects... Like why?
Anyway...

Good points:
-The chemistry of main leads is good.
-You get a Fresh feeling of love from their stories.
-No unnecessary third wheels
-No over the top characters (except a girl)
one can relate to their daily life
-Cute moments light up the screen
-Even the evil character looks handsome (Hehe!)

All in all you can definitely give a first chance to this second chance series :D

Go for it!

P.S: The second lead and the third lead have real brothers casted. So it's really confusing at first.
Coz they look mirror reflection of each other if not for their different hairstyles.
I mistook both of them as being the same character till 5th ep (I know... My stupidity when I even knew both of them had different names - Jeno & Near)
giving a warning in advance .. just in case.. there's someone like me ;)