Sekai saikyō no yōhei ga zōki ishoku de kōkōsei ni tensei shita kudan. ~Ō hai monogatari~

Experience a unique twist in 'The World’s Most Terrible Mercenary Reincarnated as a High School Student with an Organ Transplant. ~The Story of Royal Consort~' where a battle-hardened mercenary's fate intertwines with that of a brain-dead high school student through an unexpected transplant. Delve into the realms of mature themes, harem dynamics, and the challenges of transplanted memories in this intriguing Japanese web novel. Follow the protagonist's journey through modern-day Japan filled with action, tragedy, and the complexities of royal life.