At first glance, Haku looks like a woman. But do not be surprised if I say that Haku is a man.
From Naruto wiki
Debut
Buso Renkin History
Buso Renkin (武装錬金, Busō Renkin?, lit. “Arms Alchemy”) is a manga series written and drawn by Nobuhiro Watsuki, the creator of Rurouni Kenshin. Buso Renkin was serialized in Shueisha’s shōnen magazine, Weekly Shōnen Jump from June 2003 to 2005, ending at 80 chapters. The individual chapters were collected by Shueisha into 10 tankōbon volumes which were released between January 5, 2004 and April 4, 2006. The series has been licensed by VIZ Media for US release and has been adapted into an anime by Xebec, which finished its run in Japan with a total of 26 episodes. There are also two drama CDs as well as a novel based on the series.
Black Butler History
Black Butler (黒執事, Kuroshitsuji?) is a manga written and illustrated by Yana Toboso. Since its debut on September 16, 2006, it has been serialized in Square Enix’s shōnen manga magazine Monthly GFantasy.
The series follows Sebastian Michaelis, a demonic butler who is bound by a supernatural contract to serve Ciel Phantomhive, the twelve-year-old head of the Phantomhive noble family, and in return Sebastian will obtain Ciel’s soul when Ciel has finished all of his tasks including getting revenge on the people who killed his parents; after that Sebastian is then allowed to kill him and take his soul. It was announced in July 2008 that an anime adaption, directed by Shinohara Toshiya and produced by A-1 Pictures, was expected.
