Haku

ハク

Found wandering in the mountains while wearing a hospital gown, an amnesiac is discovered and nursed back to health by Kuon. She subsequently takes care of him after realizing that he is physically extremely weak by demi-human standards, unable to perform simple tasks that even children can do easily.
However, he is clever and quick-witted. He has demonstrated the ability to solve situations by thinking them through thoroughly.
After arriving in the capital of Yamato, he begins working at various jobs at Kuon's demand. Ukon asks him several times to carry out missions for him, including reporting suspicious events and finding proof of someone's corruption.