Synopsis

Kohaku and Guest were abandoned by their parents and wandered aimlessly through the dark city streets at night. Suddenly, they were scouted by a man in a black suit and sunglasses. Having no money, clothes, or food, their current situation was unbearable. They accepted the invitation, got into the car, and arrived at a mysterious facility. It turned out to be a place where children are raised to be assassins, and the conditions were brutal. They were given tactical uniforms—a poncho in their signature color over baggy black long sleeves and black pants. Training began early every morning.

Now, they have turned 14. Kohaku and Guest have been appointed as official assassins. All the other children were deemed failures and "disposed of."

A few months later, they are suddenly summoned to the Commander's office.

With hearts pounding, they enter the Commander's office. Anxious that they might have failed a mission, they slowly open the door.

The mission: Take down "Yumei," the organization said to be the strongest in the underworld. This is the biggest mission yet, and the possibility of death is not low. The Boss says, "If it's impossible, you don't have to go. But I'm asking you because I trust you." Being told that, they have no choice but to go.

A few days later, on the day of the mission. The promise made with him: "Let's definitely come back alive." Will that wish be granted?

Which will you choose: a Happy End or a Bad End?