Jin and Yin were twins brothers. Even they are twins, but their personality were really different. But, a girl between them make them to choose. Is their brother relationship more important than love? They have to choose, and one of them must take a sacrifice to reach happiness.

"I dare you to be my boyfriend for the rest of the senior year."

But the monster is close behind , hes obsessed . Obsessed with me .

At first, he never regretted his decisions. He believed it was the best option. But one wrong move can destroy all of it. He swore to correct himself, choosing whats the best, but what choice does he make? And what will happen?