Harland may be an old man, but he’s also the world’s most powerful assassin with an unmatched Risk Rarity Level 8 rating and abilities that surpass even that his legend is unparalleled. Working for governments and influential figures who shape the world, Harland accepts weapons from a mysterious girl known as “Mourning Garb” and flawlessly carries out even the most impossible missions.

“A world without crime… that’s my dream.”
This unrivaled assassin whispers These lofty words casually after completing another perfect job.

Yet, even the strongest have their vulnerabilities.
For Harland, it’s the peaceful yet eccentric and slightly troublesome girls living in the apartment building he manages.

Dive into the extraordinary yet intertwined lives of this peerless assassin and his quirky companions, blending intense action with an unexpectedly heartwarming slice of life!