Raizen

The strongest of the Three Kings, the God of War, and the strongest character in the series. Raizen, however, was injured in battle and nursed back to life by a human who he fell in love with and impregnated with his baby. Raizen vowed to never eat another human again until he saw her again, though she died before he could, and, keeping his promise, went on starving himself for hundreds of years, and his power decreased as his hunger grew.