Masamori Sumimura

Masamori Sumimura is one of the main protagonists of the manga/anime series ''Kekkaishi. ''He is the the firstborn son of the Sumimura family and the older brother of Yoshimori Sumimura. While he excelled as a Kekkaishi, he was not the legitimate heir due to the mark appearing on Yoshimori instead of him. Eventually, he left home and joined the Shadow Organization, becoming the founder and leader of its Task Force, the Night Troops.

He is voiced by Atsushi Miyauchi in the Japanese version of the anime and Patrick Seitz in the English version.

Appearance
Although Masamori is 21 years old, he has the appearance of a man much older. He is tall and has short, black hair with a small crescent shape scar in the middle of his forehead. His eyes and eyebrows are very similar to Yoshimori's.  Masamori is always seen wearing a Kekkaishi uniform while working, and prefers to wear a robe with an enlarged version of his Council of Twelve membership badge as an open challenge to those that might target him.

Personality
Masamori maintains a calm, confident attitude around his family, but he is tough on Yoshimori, partially because so much is expected of Yoshimori as the Legitimate Successor, but also because he wants Yoshimori to learn to use his great power more responsibly. Masamori also has a habit of taking on highly dangerous tasks alone, such as trying to flush out traitors within The Shadow Organization, in order to protect his family and subordinates, no matter the cost to himself.

Masamori views his subordinates as family and takes any attack on them very personally. Inwardly, Masamori is greatly concerned about both the state of The Shadow Organization and protecting Karasumori (along with his family), and is sometimes forced to temporarily choose loyalty to one over the other. These heavy burdens often keep him alert and nervous privately, and also take a toll in the form of weight loss. However, he can also be cruel: to scare Yomi into doing his bidding, he threatens to terminate Yoki. He can also be quite manipulative at times, as he willingly puts Yoshimori and Tokine in harm's way to test their skills