Aru Satsujinki no Kanwa

In a world where the boundaries between right and wrong are blurred, Towa, the sole daughter of a wealthy conglomerate CEO, finds herself in a precarious situation. After her parents' deaths, she heeds her father's cryptic instructions to relocate to an apartment building exclusively for individuals with a history of crime. Under the pseudonym "Skull," she hopes to find a sense of security and protection. However, upon her arrival, she encounters the enigmatic and feared assassin known as "Skull," Hajime Koga. As their lives become increasingly intertwined, Towa's existence hangs in the balance. The apartment building's peculiar rule, which prohibits any form of crime within its walls, only heightens the danger that lurks outside its doors. Once Towa ventures beyond the building, she will be targeted for elimination. This delicate game of cat and mouse unfolds as Towa and Hajime engage in a high-stakes game of "hide-and-seek," with the protagonist's very life at stake.