On December 25, 2015, she was announced as a member of a new idol group named "Yumeoi Shoujo", and shortly after announced as the leader. She graduated from the group on April 6, 2019.
- Name: Ono Haruka (小野はるか)
- Nickname: Harushan (はるしゃん), Haru (はる)
- Birthplace: Kanagawa, Japan
- Birthday: February 20, 1996
- Blood type: A
- Western Zodiac: Pisces
- Eastern Zodiac: Rat
- Former Bakusute Member Number: #68
- NICE GIRL Project! Kenshuusei Color:  Pink
- NICE GIRL Project! groups:
- She loves Maimero, Sanrio and loves to talk with people.
- She's the oldest in the current NICE GIRL Project! Kenshuusei lineup.
- She considers herself hard working
- She was a finalist for the Morning Musume 11th Generation ~Suppin Utahime~ Audition. Her number in the audition was #102.
- During the 11th generation auditions, she was able to keep and update her blog.
- She was frustrated that she lost the auditions, but said she has learned a lot from the experience.
- She has the same name (different kanji) as former SKE48 member Ono Haruka.
- Nice Girl Kenshuusei Official Blog (Tag: Ono Haruka)
- Former AKIHABARA Backstage pass profile
- Twitter (inactive)