Keira Donquixote, a.k.a. K, became the No. 1 assassin in the Underground Society after her mom retired. She was given a task that she had never done before.

A year ago, Donquixote and the Darshall Mafia Organization had an alliance. Keira's parents doubted that their alliance with them was sincere, so her mom gave her a mission to see if the Darshall Mafia Organization would turn their back on them.

Because in the Underground Society, the word "doubt" also means betrayal. As long as you suspect them, they will remain as traitors.

Now, she needs to go to the Philippines to start the mission that has been given to her. But even though she doesn't like to have a low profile, she's willing to swallow her pride for the sake of her mission.

But first, she needs to get close to Shaun Darshall, the son of the owner of the Darshall Mafia Organization, so she can get enough information and completely succeed in her mission.

But the question is, will she succeed?

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Quinsycho 2020