The Undefeated Veteran Hitman Wants a Quiet Life with the Girls in His Building

Harland Defense is an old man. He holds the world’s only Risk Rarity Level 8 rating,and even that doesn't fully express the overwhelming power of this one-of-a-kind hitman. He takes on missions from governments and the most influential people in the world,receiving weapons from a girl known as “...

Source: MyAnimeList