You- Jang Semi are a assassin and need to kill your target.  Kim Myungsoo a spy from Woolim.  Kim Myungsoo or Agent L-Knows Semi is after him but pretends not to since he thinks she's hot. Minors-Jang Hyungseung Semi's twin..Assassin for Cube like her.

What happens when people think every ange has been introduced to the world? Well it for them since there is only one angel that hasn't been introduced. And that angel is the Angel of Death sister to the Angel of Darkness and cousin to an Angel. What will happen if someone encounters this angel will they die or manage to survive this encounter?

In the halls of SM High contains a girl name Kim Jihre. She is a 'nerd'.No one is smart enough to figure out that she is a badass gangster at night. Or maybe 5 instead of one is smart enough.