佐藤 忠信

Tsugunobu's little brother.
Together with his brother he accompanies the protagonist by the order of Fujiwara no Hidehara.
With his attractive face and figure and elegant words he is popular with the ladies...but, the man himself thinks that is nothing but troublesome.
The person he respects the most is Hidehara, and compared to the other members of the group his loyalty towards the protagonist is the lowest.