When a top assassin is transported to a parallel world and starts a family, his mission becomes to protect them.

What?! Enlist?! Even a dog wouldn't go!

Sister: Special forces soldiers are so cool!!

Han Yu: Is it appropriate for a king of assassins like me to join the army?

In his past life, he was a hunter in the shadows, living outside the rules.

In this life, he is the king of special forces, powerful and domineering, crushing all who dare to defy him.

The top assassins on the Death List: "This special forces soldier seems even more ferocious than the King of Assassins?"