Summary
From Tokyopop:
After a near-fatal car accident, surgeons rebuilt Reiji with prosthetic parts and renamed him Himejima Kazemichi. It was a second chance at life…but there was no guarantee that his new body would last. As his artificial heart runs down, Kazemichi embarks on a journey to discover what his life really means, and live–and love–to the fullest. Along the way, he uncovers dark secrets about his past…including the organization that was responsible for resurrecting him…