Shô Okumura

In the era known as Bakumatsu, there was an assassin known as Hitokiri Battousai; eleven years later he returned as a wandering swordsman, Himura Kenshin.

In the near future, after a nuclear explosion has caused the Earth to collide with Hell, elementary student Kento finds a small daemon creature he names Anna, and raises her. The series follows the adventures of Kento and Anna as they embark on a journey to bring his mother back to life. (en.wikipedia.org)