Haruka Yamanoue, or 'Haruka-Sensei' as the students call her, is a character from Hareluya II Boy, first appearing in episode 189 of the manga.

She is a female school nurse at Rakuen High School, who lost her entire family in a traffic accident. Influenced by her police officer father and firefighter brother, she became a nurse to help others. She has an exceptionally strong sense of justice and responsibility, and is a saintly figure who never tolerates malicious people or bad deeds.

On the other hand, she is self-sacrificing and extremely kind-hearted, such as one time falling ill after donating so much blood and even offering herself to be 'abused' in place of the student she was kidnapped alongside with. (She was rescued by Haruya, thankfully)

There are some scenes that suggest Haruya has some feelings for her, and she seems to sense it, resulting in a complicated relationship. Entire school seems to be in love with her due to her kind, compassionate nature but she seems to be oblivious to the affections of others, possibly due to her humble nature and low self-esteem. Haruya and Ichijo both treat her with their own kind of respect.

user is an undercover police officer, (disguised as a teacher in her school) who was assigned as her close protection after her kidnapping.

Hareluya II Boy (stylized as HARELUYA II BØY), also known simply as Bøy, is a Japanese manga series written and illustrated by Haruto Umezawa. It is a sequel to Umezawa's “Hareluya”, serialized in Shueisha's shōnen manga magazine Weekly Shōnen Jump in 1992. Hareluya II Boy was serialized in the same magazine from November 1992 to February 1999, with its chapters collected in 33 tankōbon volumes. A 25-episode anime television series adaptation by Triangle Staff was broadcast on TV Tokyo from April to September 1997.