A novel about killers (not an ancient one)

There are many novels about killers that can be referred to the following popular genre: " Lord Snow Eagle ": This novel tells the story of a young professional assassin's growth. He encountered various challenges in the process of carrying out missions and gradually grew into an outstanding assassin. 2 Sword Comes: This novel is a wuxia themed novel about a young swordsman growing up in Jianghu. He constantly challenged himself to learn martial arts and eventually became a legendary swordsman. 3 " Full Time Expert ": This novel is a game themed novel about a retired professional player who returns to the gaming circle and starts an intense competition with other experts. He continued to grow during the competition and eventually became a top player. 4." Battle Through the Heavens ": This novel is a fantasy themed novel that tells the story of a young man growing up on the path of cultivation. He encountered various challenges in the process of cultivation and gradually grew into a powerful cultivator. Blade: This is a crime themed novel about a professional killer. During the course of his mission, he constantly broke through and became a top-notch assassin.