their journey may seems so long
Until they met and till everybody let go of their hatred and move on
i think this drama can show their character development
The ML seems arrogant at first but as epoisode go on you may feel he changed a lot
He let go of her ego of being the best or as known mr know it all due to some circumstances
Until the end you can see her character really changed to mature adult and he really think a lot before he going to make decision due to the past mistake
The ML even though he really young but eventually he really did well in this drama
He really have nice future if continue to impove her acting

The FL character is so naive at the beginning with her pure soul and heart that make the ML changes time by time. I think when he met the ML she feel joy and upgraded when he give her difficult task
That make she think she really enjoy the courses and how challeging is it. The parent is really typical educated parent that always save their image. Feel sad till the end they seems not approve their daughter wedding. In real life when a women married they may need their parent to blessing their marriage but at least ML and FL get support from their friend.

The story also teach us about forgiveness
When we get betray, we only think on how to get revenge and that will make our heart fee burdened by that revenge
In the end ML forgive the friend betrayal and start afresh.