Isshuukan Go, Anata wo Koroshimasu: Bon Voyage

A new sinner. A new week. Encounters and farewells continue. Mimi, the cat-eared assassin, is an unusual hitwoman who grants her targets their desired final week before their inevitable end. "Let me be part of your family, Mimi-senpai!" Having relocated to a new country, Mimi is soon joined by an assassin from the intelligence division—Codename 46, also known as Shiro. Deeply admiring Mimi, Shiro is assigned as her apprentice, and together, they witness the final moments of their targets. A dying painter with only a week left to live, a young researcher who killed his own parents, a former mercenary who betrayed his employer—what will Mimi take away from these fleeting encounters with new sinners? A continuation of the story that follows the cat-eared assassin and the criminals who have only one week left to live. (Source: GA Bunko, translated)