No Bra(のーぶらNo Bura) is a Japanese teenage boy's romance manga written and illustrated by Kenjiro Kawatsu that has been serialized in Weekly Shōnen Champion since 2002. No Bra tells the story of Masato Kataoka, a somewhat dimwitted high school student, whose childhood friend Yuki Nomura moves in with him one day. Because of Yuki's cute face, girlish clothing, and apparently feminine features, Masato is extremely happy with his new life—until Yuki's mother calls Masato, and tells him that Yuki is a boy. The story revolves around Masato's relationship with Yuki and his slowly disintegrating reluctance to develop romantic feelings for him.