Tensei Kishi Danchou wa Haraguro Saishou no Shuuchaku Ai wo Zenryoku Kaihi Shitai

Severely wounded while preventing the king's assassination, Commander Guilford suddenly regains memories of his past life as a Japanese police officer! He awakens from the brink of death to find his childhood friend, Prime Minister Lukash, passionately courting him, declaring, "I won't allow you to die for His Majesty... You belong to me!" As Guilford becomes increasingly confused, a young lady appears, claiming to be reincarnated like Guilford, and declares, "This is the world of a BL novel—you're the Prime Minister's lover!" (Source: Tokuma Shoten, translated) Note: Includes two extra chapters.