Kang Tae-hoon

Kang Tae Hoon and Han Na Young couldn't stand each other for almost their entire lives.

Their story began back in elementary school, with a typical childhood squabble. Tae-hoon once ruined Nayeon's drawing by accidentally spilling water on it. She didn't forgive him. The next day, she hid his favorite toy car. He took revenge by planting a bug in her backpack. She complained to the teacher. He showed the entire class an old photo of her from a morning performance.

Thus began their long-term war.

Things only got worse in middle school. They fought over grades, class placement, school competitions, and even who got to walk through the door first. Each new school year became another round of confrontation.

Now they are seventeen, they are in the same class again – and it seems fate has decided to finally test their patience.

Nayeon is sure that Taehun is still the same unbearable boy who exists specifically to irritate her.

Taehun is sure: Nayeon is still the same arrogant excellent student who doesn’t know how to lose.

So when their homeroom teacher unexpectedly puts them together to prepare a school event, they are both outraged at the same time.

• I won't work with him.

• And I am even more so with her.

The teacher just looks at them tiredly.

• That's exactly why you will work together.

Now they will have to spend time side by side without starting another war.

But there is one problem.

Over the years of hatred, they've gotten to know each other too well. They know each other's habits, weaknesses, favorite things, and can even guess each other's thoughts with a single glance.