Furuichi Takayuki's younger sister.
No flashback or any mentions from the characters.
Honoka Furuichi, who is created by Ryuhei Tamamura, has no information regarding any inspiration used to create her. She first appears in Beelzebub volume 3 (chapter 23) and episode 3. Her Japanese voice actress is Ayaka Shimizu.
She and her family arrive to find Alaindelon asking them to live under their house. She and her family are shocked to hear Alaindelon confessing that he and Furuichi "did" it. (it was an implication)
Like her brother, she has no special talent or abilities.