The Dark Doctor Ikuru summary:
A catastrophic event has thrust the world into an age where disease begets disease. Ostracized for his unconventional treatment methods, the dark Doctor Ikuru is stricken with an immortalizing disease. On a desperate mission to die, he must save a world desperate to live. This medical science-fiction adventure will go to the very edge of humanity and back in one man's search for an ending to his suffering, all while saving the world he wishes to leave.